An Easy Quiz On Stoichiometry

10 Questions | Total Attempts: 237

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An Easy Quiz On Stoichiometry

Stoichiometry is the calculation that deals with the amount of reactants required and the amount of products formed during a chemical reaction. It is based on the Law of Conservation of Mass according to which the total mass before and after a chemical reaction remains undisturbed. The following quiz is an easy stoichiometry test. Balance all equations before solving. Good Luck!


Questions and Answers
  • 1. 
     Na + Cl2 --> NaCl (unbalanced) How many moles of chlorine gas (Cl2) would react with 5.0 moles of sodium (Na)        according to the following chemical equation?
    • A. 

      1.0

    • B. 

      1.5

    • C. 

      2.0

    • D. 

      2.5

    • E. 

      3.0

  • 2. 
    Na + Cl2 --> NaCl (unbalanced) Using the equation (after it is balanced) above, determine the amount of product that          can be produced  from 24.7 g Na.  (in grams)
    • A. 

      55

    • B. 

      62

    • C. 

      71

    • D. 

      82

    • E. 

      84

  • 3. 
    In the reaction C8H18 + O2 --> CO2 + H2O (unbalanced) If 27.3g of C8H18 are combusted, what mass of water will be produced?( in grams)
    • A. 

      13.5

    • B. 

      23.4

    • C. 

      53.2

    • D. 

      47.1

    • E. 

      37.8

  • 4. 
    CH4   +   O2  -->  CO2   +   2 H2O How many moles of O2 are required to burn 0.5 moles of CH4?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

    • E. 

      5

  • 5. 
    NaOH   +   HCl   --> NaCl   +   H2O How many grams of NaOH will react with 36.5 g of HCl? ( in grams)
    • A. 

      40

    • B. 

      60

    • C. 

      80

    • D. 

      100

    • E. 

      120

  • 6. 
    How many moles of water is formed from the combustion of 5 moles of hydrogen gas in oxygen gas?
    • A. 

      2.5

    • B. 

      4

    • C. 

      5

    • D. 

      7

    • E. 

      None of the above

  • 7. 
    Methane gas (CH4) gets burned in oxygen (O2) to form carbon dioxide (CO2) and water vapor (H2O). The balanced reaction is
    • A. 

      CH4 --> CO2 + 2H2O

    • B. 

      2CH4 + O2 --> 2CO2 + 2H2O

    • C. 

      CH4 + 2O2 --> CO2 + 2H2O

    • D. 

      3CH4 + 2O2 --> CO2 + 2H2O

    • E. 

      4CH4 + 2O2 --> 4CO2 + 2H2O

  • 8. 
    Methane gas (CH4) gets burned in oxygen (O2) to form carbon dioxide (CO2) and water vapor (H2O). If I burn 10 grams of methane, how many grams of CO2 will be produced?
    • A. 

      42.7 grams of CO2

    • B. 

      833 grams of CO2

    • C. 

      20 grams of CO2

    • D. 

      27.4 grams of CO2

    • E. 

      30 grams of CO2

  • 9. 
    In the decomposition of water to hydrogen gas and oxygen gas, how many moles of water is needed to produce 10.0 moles of oxygen gas?
    • A. 

      5.00

    • B. 

      10.0

    • C. 

      15.0

    • D. 

      20.0

    • E. 

      25.0

  • 10. 
    In the decomposition of water to hydrogen gas and oxygen gas, how many moles of water is needed to produce 32 grams of oxygen gas?
    • A. 

      0.5

    • B. 

      1.0

    • C. 

      1.5

    • D. 

      2.0

    • E. 

      2.5