Beane Unit 5 Chemistry Test

24 Questions | Total Attempts: 88
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Beane Unit 5 Chemistry Test
Questions and Answers
  • 1. 
    What is the molar mass of water?
    • A. 

      18

    • B. 

      18.02

    • C. 

      17.01

    • D. 

      16

  • 2. 
    What is the value used for Avogadro’s number?
    • A. 

      6.0

    • B. 

      6.02

    • C. 

      6.02 x10^23

    • D. 

      6.02 x 10^32

  • 3. 
    Which of the following compounds has a formula with no subscripts?
    • A. 

      Nitrogen dioxide

    • B. 

      Aluminum phosphate

    • C. 

      Sodium hydroxide

    • D. 

      Lithium nitrate

  • 4. 
    The molar mass for copper(II) sulfate pentahydrate is
    • A. 

      159.6 g/mol

    • B. 

      149.6 g/mol

    • C. 

      259.6 g/mol

    • D. 

      249.6 g/mol

  • 5. 
    Calculate the number of moles in 8.0 g of sodium hydroxide, NaOH.
    • A. 

      .05

    • B. 

      .10

    • C. 

      .15

    • D. 

      .20

  • 6. 
    What are the reactants in the following equation? H2 + O2 → 2H2O 
    • A. 

      Hydrogen

    • B. 

      Oxygen

    • C. 

      Water

    • D. 

      Hydrogen and Oxygen

  • 7. 
    What is the percent of oxygen in Fe2(SO4)3?
    • A. 

      48%

    • B. 

      31%

    • C. 

      35%

    • D. 

      100%

  • 8. 
    How many moles are 345 g of Na?
    • A. 

      5.73 mol

    • B. 

      15.0 mol

    • C. 

      7930 mol

    • D. 

      9.03 mol

  • 9. 
    Propane, C3H8 (g), burns in oxygen to form carbon dioxide and water.  Which equation correctly shows this reaction?    
    • A. 

    • B. 

    • C. 

    • D. 

  • 10. 
    In which situation is a chemical reaction occurring?
    • A. 

      Salt dissolving in water

    • B. 

      A nail rusting

    • C. 

      Ice melting

    • D. 

      A glass window breaking

  • 11. 
    Fossil fuels that contain carbon, such as coal, petroleum and natural gas, combine with oxygen to produce carbon dioxide gas and energy often in the form of heat.  These processes are example of which type of reactions?
    • A. 

      Endothermic reactions

    • B. 

      Metabolic reactions

    • C. 

      Replacement reactions

    • D. 

      Exothermic reaction

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