Chemistry Multiple Choice Questions Scrambled

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1. PH is an important factor in

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About This Quiz
Chemistry Multiple Choice Questions Scrambled - Quiz

Challenge your knowledge of chemistry with this scrambled multiple-choice quiz! Topics include atomic structure, the periodic table, and isotopes. Ideal for students looking to test their understanding of... see morefundamental chemistry concepts and prepare for competitive exams. see less

2. The person given credit for developing the first modern periodic table is

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3. There are 3.01 x 10^23 atoms present in

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4. The total number of atoms represented in the formula Be(C2H3O2)2 is

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5. Cola soft drinks have a sucrose concentration of 11g/100mL. What mass of sucrose is present in a 355mL can of Cola?

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6. What volume of water should be added to 500mL of a 1.0mol/L CuSO4 solution to dilute it to 0.5mol/L

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7. Which of the following is NOT a property of acids?

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8. A metaloid in Period 3 is

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9. The atomic mass of barium is due to the number of

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10. The substance NH3 is a very important industrial chemical. It is used directly as a fertilizer and is also used to produce many other useful chemicals. The IUPAC name of this substance is

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11. Which of the following always indicates that a chemical reaction has taken place?

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12. One atomic mass unit is defined as

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13. Converting 153.0g of Mg(CN2) into moles yields approximately

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14. A possible molecular formula for the compound CH2O is

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15. The percentage of nitrogen, by mass, in nitric acid, HNO3, is

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16. The percentage composition of chlroine, by mass, in the compound K2PtCl4 is

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17. The empirical formula of a compound containing 92.3% carbon and 7.7% hydrogen, by mass, is

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18. If the molar mass of a hydrocarbon is 26.0g/mol, and its empirical formula is CH, its molecular formula is

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19. One way to produce oxygen gas is via the decomposition of potassium chlorate, as shown in the equation KClO3 = KCl + O2. When properly balanced the sum of the coefficients is 

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20. Determine the number of moles of silver that are produced when 210g of silver nitrate are completely reacted as shown in the following reaction: Sn + 2AgNO3 = 2Ag + Sn(NO3)2

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21. An underground formation of permeable rock that produces useful well water is a

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22. Which of the following is a common source of water contamination?

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23. The contamination of Walkerton, Ontario's water supply in 2000 was caused by

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24. A bottle contains 3L of 12mol/L H2SO4 solution. After half of the contents are usedup, the remaining solution has a concentration of

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25. Which of the following is the correct net ionic equation for barium sulphate?

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26. An acidic solution such as vinegar

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27. A mixture of 0.2 mol Ar and 0.25 mol N2 is compressed at 298K from 10.0L to 1.00L. What is the change in pressure?

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28. Air Canada air buses fly at altitudes around 10km which is

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29. The ratio of hydrogen to oxygen, by mass, in water is

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30. A compound containing carbon, hydrogen, and chlorine is composed of 49.0% carbon and 2.74% hydrogen by mass; the remainder is chlorine. The empirical formula of the compound is 

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31. Household ammonia has a pH of 12.5 and lye has a pH of 13.5. Which of the following is true?

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32. Doubling the initial pressure while keeping the temperature constant causes the volume of a gas to go from 1000mL to 

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33. The particle that has the smallest mass is the

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34. Which of the following matches of group number and common name is incorrect?

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35. Which of the following matches of group number and common name is incorrect?

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36. Which of the following is the most reactive element?

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37. Which of the following is a practical use of radioisotopes?

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38. According to the Lewis model of the atom, the number of bonding electrons in a nitrogen atom is

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39. The systematic IUPAC name for HBr(aq) is

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40. An example of a binary compound is

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41. Hydroselenic acid is a very toxic substance. Its chemical formula is

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42. What is the formula for zinc chloride?

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43. An example of a binary compound is

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44. Classify the following reaction: Cl2 + ZnI2 = ZnCl2 + I2

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45. Stainless steel is harder than pure iron because

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46. The greenhouse effect is caused by

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47. The mass found in 0.10 mol of KHC4H4O6 is 

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48. What mass of pure hydrogen peroxide would be dissolved in 250mL of 6.0% W/V H2O2(aq)

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49. Which of the following contains 1mol of dissolved copper(II) nitrate?

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50. Which of the following processes occur during the tertiary treatment of wastewater?

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51. Which of the following expresses standard atmospheric pressure?

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52. Which of the following laws states that volume and temperature (in Kelvin) of a gas are directly proportional at constant pressure and number of molecules?

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53. A gas is collected at 298K and 101kPa and it occupies a volume of 200mL. What volume will the same gas occupy if the pressure is doubled and the temperature is raised to 596K?

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54. A 100.0g sample of a compound is composed of 16.3g of carbon, 32.1g of chlorine, and 51.6g of fluorine. The empirical formula of the compound is

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55. Potassium chloride and oxygen gas are formed upon heating potassium chlorate. The following balanced equation shows this decomposition process: 2KClO3 = 2KCl + 3O2The number of moles of KClO3 required to produce 5.0 mol of oxygen is

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56. Which of the following is not a solution?

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57. The dissociation equation K3PO4(s) = 3K(aq) + PO4(aq) represents

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58. The concentration of fluoride ions, F-, in municipal drinking water cannot exceed 1.5ppm. What is the maximum mass of fluoride ions that can be dissolved in 500mL of water?

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59. A solution whose precise concentration is known is called a

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60. As the temperature of a solution increases, the solubility of salts ___ and the solubility of gases ___

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61. Secondary treatment of waste water involves

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62. Which of the following combinations of aqueous solutions would produce a precipitate?

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63. Breathalyzers can determine blood alcohol content indirectly by

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64. Based on the solubility rules, which of the following is insoluble?

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65. A compound that ionizes in water to form hydroxide ions is

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66. Blackberries have a [H+] = 4.0 x 10^-4 mol/L. What is their pH?

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67. Seawater has a pH of 8.0. What is the hydrogen ion concentration?

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68. How much more acidic is vinegar (pH = 2.0) than coffee (pH = 5.0)

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69. Which of the following is the correct representation for a hydronium ion?

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70. The best explanation why sodium carbonate solutions are alkaline would be 

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71. An amphiprotic substance

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72. Consider the following equation: HC2H3O2 + H2O = C2H3O2 + H3O

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73. A lab procedure involving the careful addition of an acid from a buret is called

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74. At a fixed temperature and pressure, the average distance between molecules would be greater in a sample of

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75. The random motion of gas molecules is a significant part of the explanation for the 

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76. Welders use two types of compressed gasses to produce very high temperatures to cut or weld metals. What are the two gasses used by welders to accomplish this?

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77. What does the acronym SCUBA stand for?

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78. Which of the following graphs represent the plot of volume versus temperature (in K) at constant pressure? (Refer to Test for this question)

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79. A instrument used to measure gas pressure is a

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80. How many moles of KClO3 are needed to form 2.8L of O2, measured at STP, according to the following reaction: 2KClO3 = 2KCl + 3O2

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81. Two atoms are isotopes if they have

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82. The properties of elements repeat periodically if they are arranged by

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83. Which of the following formulas does not represent a molecular compound?

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84. If the name of a chemical compound ends in "ide", the compound is

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85. Which of the following has a concentration of 2mol/L

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86. Which of the following compounds is insoluble in water?

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87. Which of the following is true for hydrochloric acid?

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88. Pure oxygen boils at -183 degrees celsius and freezes at -219 degrees celsius. What state will the oxygen be in if the temperature is brought to within 50K of absolute zero?

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89. "The volume of a given mass of a gas varies directly as the absolute temperature if the pressure is kept constant" is a statement of

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90. A new element, dmytrium, has two isotopes, Dm-350 and Dm-375. The composition of dmytrium is 62.0% Dm-350 and 38.0% Dm-375 by mass. The relative atomic mass of this new element is 

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91. Determine the sum of all the reactant coefficients when the following equation is balanced: H3PO4 + BaCO3 = Ba3(PO4)2 + H2O + CO2

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92. The element found in the periodic table in Group 4 and Period 6 is

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93. The element found in the periodic table in Group 6 and period 4 is

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94. A nonmetal in Period 6 is

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95. Multivalent metals

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96. The IUPAC name for CaCl2 is

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97. Which of the following is the proper dot diagram for NaCl?

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98. A compound compoesd of sodium, sulfur, and oxygen would be named

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99. The IUPAC name for P2I4 is

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100. The IUPAC name for KMnO4 is

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101. The formula for carbon tetrachloride is

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102. What is the formula for copper(II) nitrite?

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103. The kinetic molecular theory includes all of the following except

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104. The reaction of silver nitrate with zinc would be classified as a 

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105. Hydrogen can be used as an alternative fuel for automobiles. Classify the following chemical reaction: 2H2 + O2 = 2H2O

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106. Classify the following reaction: 2NaClO3 = 2NaCl + 3O2

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107. Which metal would not displace gold, Au, from a compound?

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108. Tin and oxygen can combine to form two compounds of different combining proportions. Resulting formulas of these compounds include

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109. Which of the following best describes on mole of potassium sulfate, K2SO4?

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110. Which one of the following statements is a quantitative observation?

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111. Which of the following careers would involve a lot of work with solutions?

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112. A sample of a gas with a volume of 1L at 25 degrees celsius and a pressure of 101.325 kPa is subjected to an increase in pressure and a decrease in temperature. The volume of the gas will

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113. On which continent are hydrocarbon-based refrigerators not readily available to the mass market?

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114. Upon analysis in the lab, a compound is found to consist of 2.2% hydrogen, 26.7% carbon, and 71.1% oxygen. The empirical formula for this compound is

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115. Which of the following is not always conserved in a chemical reaction?

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116. The limiting reagent of a chemical reaction is

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117. Carbon dioxide and water are produced when ethanol, C2H5OH, is burned in oxygen. The number of moles of CO2 that is produced when burning 6.0 mol of ethanol is

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118. Intermolecular forces are

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119. Oxygen and carbon dioxide have low solubilities in water because

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120. A solution that has a relatively large quantity of solute dissolved in the solvent is 

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121. When diluting concentrated acids, always add

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122. Screening, flotation, settling, and filtering out of solid particles in waste water occurs during the

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123. Which of the following is the correct dissociation reaction for calcium hydroxide?

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124. Which of hte following is NOT a property of bases?

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125. According to Bronsted-Lowry an acid is

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126. The point during a titration at which a sharp colour change occurs is called the 

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127. Under conditions of constant temperature and amount of molecules, Boyle's law requires thati) P1V1 = P2V2ii) PV = Constantiii) P1/P2 = V1/V2

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128. Temperature is

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129. Laughing gas, N2O, and tear gas, NH3, are released at the same time at an equal distance away from you. Particles of laughing gas and tear gas move by simple diffusion and each molecule has the same kinetic energy. The room is perfectly sealed with no prevalent air current. Would you laugh or cry first?

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130. An unkonwn gas has a density of 1.95g/L at STP. What is the molar mass of this gas knowing that the universal gas constant is 8.31 kPa L/mol K

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131. What pressure would be exerted by a mixture of 1.4g of nitrogen gas and 4.8g of oxygen gas in a 0.2L container at 330K?

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132. A certain gas was found to have a mass of 28.0g and occupy a volume of 22.4L at STP. What is the perssure of this gas?

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133. Determine the number of grams of HCl needed to react completely with 12.8g of aluminum, acording to the following equation: 2Al = 6HCl = 2AlCl3 + 3H2

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134. Which measurement has the highest pressure?

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135. The temperature of a gas remains constant while the volume of a given amount of gas is tripled. What will happen to the pressure reading compared to the initial temperature?

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136. According to the periodic law, chemical properties are repeated at a regular interval when

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137. The atomic number is the number of

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138. The concept of multiple covalent bonds is used to explain the molecular formula of 

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139. A metallic element X forms a carbonate with the formula X(CO3)2. The corresponding fluoride compound of element X would have the formula

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140. If XF2 is the correct formula for a metallic fluoride, then the formula for the oxide of X is

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141. Which of the following combinations would result in the formation of a precipitate? 

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142. The SI symbol used for the atomic mass unit

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143. An isotope that has three times the mass of an atom of C-12 is most likely an atom of

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144. Converting 4.8 x 10^-2mol of ammonium hydroxide (NH4OH) into mass yields 

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145. Which of the following mixtures is homogeneous?

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146. Which term would best describe 40g of NH4Cl dissolved in 100mL of water at 30 degrees celsius?

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147. Which of the following would not precipitate the CO3 ion?

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148. Which of the net ionic equation best represents the reaction between silver nitrate and potassium acetate?

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149. A sealed 4.0 L pickle jar is filled with O2 gas by the downward displacement of water. The jar is placed into the refrigerator. What will happen to the O2 gas?

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150. Avogadro's principle states that at the same temperature and pressure,

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151. Why is it easier to remove an electron from potassium than it is to remove an electron from calcium?

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152. Determine the number of moles of chlorine, Cl2, that are required to form 2.50 mol of lithium chloride, LiCl, according to the following equation: 2LiI + Cl2 = 2LiCl + I2

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153. Nitric acid is classified as a strong acid because

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154. The mass of a fixed quantity of a gas

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155. Which of the following metals would most likely oxidize if a clean metal surface is exposed to the atmosphere?

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156. Which of the following atoms is believed to contain three lone pairs of electrons?

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157. Why does atomic radius decrease from left to right in a period?

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158. Why does electron affinity increase from bottom to top in a chemical family?

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159. Which of the following are true statements about the change of state from liquid to gas?

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160. At what temperature does an ideal gas have zero kinetic energy?

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PH is an important factor in
The person given credit for developing the first modern periodic table...
There are 3.01 x 10^23 atoms present in
The total number of atoms represented in the formula Be(C2H3O2)2 is
Cola soft drinks have a sucrose concentration of 11g/100mL. What mass...
What volume of water should be added to 500mL of a 1.0mol/L CuSO4...
Which of the following is NOT a property of acids?
A metaloid in Period 3 is
The atomic mass of barium is due to the number of
The substance NH3 is a very important industrial chemical. It is used...
Which of the following always indicates that a chemical reaction has...
One atomic mass unit is defined as
Converting 153.0g of Mg(CN2) into moles yields approximately
A possible molecular formula for the compound CH2O is
The percentage of nitrogen, by mass, in nitric acid, HNO3, is
The percentage composition of chlroine, by mass, in the compound...
The empirical formula of a compound containing 92.3% carbon and 7.7%...
If the molar mass of a hydrocarbon is 26.0g/mol, and its empirical...
One way to produce oxygen gas is via the decomposition of potassium...
Determine the number of moles of silver that are produced when 210g of...
An underground formation of permeable rock that produces useful well...
Which of the following is a common source of water contamination?
The contamination of Walkerton, Ontario's water supply in 2000 was...
A bottle contains 3L of 12mol/L H2SO4 solution. After half of the...
Which of the following is the correct net ionic equation for barium...
An acidic solution such as vinegar
A mixture of 0.2 mol Ar and 0.25 mol N2 is compressed at 298K from...
Air Canada air buses fly at altitudes around 10km which is
The ratio of hydrogen to oxygen, by mass, in water is
A compound containing carbon, hydrogen, and chlorine is composed of...
Household ammonia has a pH of 12.5 and lye has a pH of 13.5. Which of...
Doubling the initial pressure while keeping the temperature constant...
The particle that has the smallest mass is the
Which of the following matches of group number and common name is...
Which of the following matches of group number and common name is...
Which of the following is the most reactive element?
Which of the following is a practical use of radioisotopes?
According to the Lewis model of the atom, the number of bonding...
The systematic IUPAC name for HBr(aq) is
An example of a binary compound is
Hydroselenic acid is a very toxic substance. Its chemical formula is
What is the formula for zinc chloride?
An example of a binary compound is
Classify the following reaction: Cl2 + ZnI2 = ZnCl2 + I2
Stainless steel is harder than pure iron because
The greenhouse effect is caused by
The mass found in 0.10 mol of KHC4H4O6 is 
What mass of pure hydrogen peroxide would be dissolved in 250mL of...
Which of the following contains 1mol of dissolved copper(II) nitrate?
Which of the following processes occur during the tertiary treatment...
Which of the following expresses standard atmospheric pressure?
Which of the following laws states that volume and temperature (in...
A gas is collected at 298K and 101kPa and it occupies a volume of...
A 100.0g sample of a compound is composed of 16.3g of carbon, 32.1g of...
Potassium chloride and oxygen gas are formed upon heating potassium...
Which of the following is not a solution?
The dissociation equation K3PO4(s) = 3K(aq) + PO4(aq) represents
The concentration of fluoride ions, F-, in municipal drinking water...
A solution whose precise concentration is known is called a
As the temperature of a solution increases, the solubility of salts...
Secondary treatment of waste water involves
Which of the following combinations of aqueous solutions would produce...
Breathalyzers can determine blood alcohol content indirectly by
Based on the solubility rules, which of the following is insoluble?
A compound that ionizes in water to form hydroxide ions is
Blackberries have a [H+] = 4.0 x 10^-4 mol/L. What is their pH?
Seawater has a pH of 8.0. What is the hydrogen ion concentration?
How much more acidic is vinegar (pH = 2.0) than coffee (pH = 5.0)
Which of the following is the correct representation for a hydronium...
The best explanation why sodium carbonate solutions are alkaline would...
An amphiprotic substance
Consider the following equation: HC2H3O2 + H2O = C2H3O2 + H3O
A lab procedure involving the careful addition of an acid from a buret...
At a fixed temperature and pressure, the average distance between...
The random motion of gas molecules is a significant part of the...
Welders use two types of compressed gasses to produce very high...
What does the acronym SCUBA stand for?
Which of the following graphs represent the plot of volume versus...
A instrument used to measure gas pressure is a
How many moles of KClO3 are needed to form 2.8L of O2, measured at...
Two atoms are isotopes if they have
The properties of elements repeat periodically if they are arranged by
Which of the following formulas does not represent a molecular...
If the name of a chemical compound ends in "ide", the...
Which of the following has a concentration of 2mol/L
Which of the following compounds is insoluble in water?
Which of the following is true for hydrochloric acid?
Pure oxygen boils at -183 degrees celsius and freezes at -219 degrees...
"The volume of a given mass of a gas varies directly as the...
A new element, dmytrium, has two isotopes, Dm-350 and Dm-375. The...
Determine the sum of all the reactant coefficients when the following...
The element found in the periodic table in Group 4 and Period 6 is
The element found in the periodic table in Group 6 and period 4 is
A nonmetal in Period 6 is
Multivalent metals
The IUPAC name for CaCl2 is
Which of the following is the proper dot diagram for NaCl?
A compound compoesd of sodium, sulfur, and oxygen would be named
The IUPAC name for P2I4 is
The IUPAC name for KMnO4 is
The formula for carbon tetrachloride is
What is the formula for copper(II) nitrite?
The kinetic molecular theory includes all of the following except
The reaction of silver nitrate with zinc would be classified as...
Hydrogen can be used as an alternative fuel for automobiles. Classify...
Classify the following reaction: 2NaClO3 = 2NaCl + 3O2
Which metal would not displace gold, Au, from a compound?
Tin and oxygen can combine to form two compounds of different...
Which of the following best describes on mole of potassium sulfate,...
Which one of the following statements is a quantitative observation?
Which of the following careers would involve a lot of work with...
A sample of a gas with a volume of 1L at 25 degrees celsius and a...
On which continent are hydrocarbon-based refrigerators not readily...
Upon analysis in the lab, a compound is found to consist of 2.2%...
Which of the following is not always conserved in a chemical reaction?
The limiting reagent of a chemical reaction is
Carbon dioxide and water are produced when ethanol, C2H5OH, is burned...
Intermolecular forces are
Oxygen and carbon dioxide have low solubilities in water because
A solution that has a relatively large quantity of solute dissolved in...
When diluting concentrated acids, always add
Screening, flotation, settling, and filtering out of solid particles...
Which of the following is the correct dissociation reaction for...
Which of hte following is NOT a property of bases?
According to Bronsted-Lowry an acid is
The point during a titration at which a sharp colour change occurs is...
Under conditions of constant temperature and amount of molecules,...
Temperature is
Laughing gas, N2O, and tear gas, NH3, are released at the same time at...
An unkonwn gas has a density of 1.95g/L at STP. What is the molar mass...
What pressure would be exerted by a mixture of 1.4g of nitrogen gas...
A certain gas was found to have a mass of 28.0g and occupy a volume of...
Determine the number of grams of HCl needed to react completely with...
Which measurement has the highest pressure?
The temperature of a gas remains constant while the volume of a given...
According to the periodic law, chemical properties are repeated at a...
The atomic number is the number of
The concept of multiple covalent bonds is used to explain the...
A metallic element X forms a carbonate with the formula X(CO3)2. The...
If XF2 is the correct formula for a metallic fluoride, then the...
Which of the following combinations would result in the formation of a...
The SI symbol used for the atomic mass unit
An isotope that has three times the mass of an atom of C-12 is most...
Converting 4.8 x 10^-2mol of ammonium hydroxide (NH4OH) into mass...
Which of the following mixtures is homogeneous?
Which term would best describe 40g of NH4Cl dissolved in 100mL of...
Which of the following would not precipitate the CO3 ion?
Which of the net ionic equation best represents the reaction between...
A sealed 4.0 L pickle jar is filled with O2 gas by the downward...
Avogadro's principle states that at the same temperature and...
Why is it easier to remove an electron from potassium than it is to...
Determine the number of moles of chlorine, Cl2, that are required to...
Nitric acid is classified as a strong acid because
The mass of a fixed quantity of a gas
Which of the following metals would most likely oxidize if a clean...
Which of the following atoms is believed to contain three lone pairs...
Why does atomic radius decrease from left to right in a period?
Why does electron affinity increase from bottom to top in a chemical...
Which of the following are true statements about the change of state...
At what temperature does an ideal gas have zero kinetic energy?
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