Challenge 8.3 - One Step Mole Conversions
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What is the mass of 4.65 moles of oxygen gas? (O2)
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149 g of O2
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4.65 g of O2
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0.145 g of O2
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0.15 g of O2
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Challenge 8.3 - One Step Mole Conversions tests understanding of mole conversion principles in chemistry, focusing on calculations involving mass and moles of various compounds like O2, CO2, CF4, Al2O3, NaCl, and SrCl2.
Quiz Preview
- 2.
How many atoms are in 7.86 moles of sodium chloride?
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459 atoms of NaCl
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4.73 x10^24 atoms of NaCl
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1.31 x 10^-23 atoms of NaCl
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6.02 x10^23 atoms of NaCl
Correct Answer
A. 4.73 x10^24 atoms of NaClExplanation
option 1 is wrong because you did not use the right conversion factor
option 2 is right
option 3 is wrong because you flipped your conversion factor
option 4 is wrong because it is avogadro's number onlyRate this question:
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- 3.
How many liters of carbon dioxide are in 63.5 moles of CO2?
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1.44 L CO2
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1420 L CO2
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3.93 x 10^25 L CO2
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2490 L CO2
Correct Answer
A. 1420 L CO2Explanation
option 1 is wrong because you flipped your conversion factor
option 2 is right
option 3 is wrong because you used avogadros number
option 4 is wrong because you used the molar mass of CO2Rate this question:
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- 4.
How many moles of carbon dioxide are in 22.5 grams of CO2?
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990 moles of CO2
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22.5 moles of CO2
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0.511 moles of CO2
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44.01 moles of CO2
Correct Answer
A. 0.511 moles of CO2Explanation
option 1 is wrong because you flipped your conversion factor
option 2 is wrong because you did not convert
option 3 is correct
option 4 is wrong because that is the molar mass of CO2Rate this question:
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- 5.
A chemists needs 3.52 moles of aluminum oxide, Al2O3, for a particular experiment. How many grams of Al2O3 should she weight out?
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359 g of Al2O3
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0.0345 g of Al2O3
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102 g of Al2O3
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3.52 g of Al2O3
Correct Answer
A. 359 g of Al2O3Explanation
option 1 is right
option 2 is wrong because you flipped your conversion factor
option 3 is wrong because it is the molar mass of Al2O3
option 4 is wrong because you did not convertRate this question:
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- 6.
How many moles of carbon tetrafluoride are in 176 grams of CF4?
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88.01 moles of CF4
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176 moles CF4
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15500 moles of CF4
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2.00 moles of CF4
Correct Answer
A. 2.00 moles of CF4Explanation
option 1 is wrong because that is the molar mass of CF4
option 2 is wrong because you did not covert
option 3 is wrong because you flipped your conversion factor
option 4 is rightRate this question:
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- 7.
How many moles of liquid dihydrogen monoxide are there when you have 253 L of dihydrogen monoxide?
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11.3 moles of H2O
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5670 moles of H2O
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4.20 x 10^-22 moles of H2O
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14.0 moles of H2O
Correct Answer
A. 11.3 moles of H2OExplanation
option 1 is right
option 2 is wrong because you flipped your conversion factor
option 3 is wrong because you use avogadros number
option 4 is wrong because you use molar massRate this question:
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- 8.
A chemist has 5.69 x 10^26 molecules of strontium chloride. How many moles of strontium chloride do they have?
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158.52 moles of strontium chloride
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6.02 x 10^23 moles of strontium chloride
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3.43 x 10^50 moles of strontium chloride
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945 moles of strontium chloride
Correct Answer
A. 945 moles of strontium chlorideExplanation
Option 1 is wrong because that is the molar mass of SrCl2
option 2 is wrong because that is avogadros number
option 3 is wrong because you flipped your conversion factor
option 4 is rightRate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
Jan 24, 2016Quiz Created by
Cbrammell