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Balancing equations, percent composition, Gram Formula Mass calculations, writing compound formulas and names

Quiz by Christy Hall

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30 questions
Show answers
  • Q1
    What is the percent composition of water (H2O) by mass?
    11.2% hydrogen, 88.8% oxygen
    50% hydrogen, 50% oxygen
    25% hydrogen, 75% oxygen
    33.3% hydrogen, 66.7% oxygen
    30s
  • Q2
    What is the balanced equation for the combustion of butane (C4H10)?
    C4H10 + 3 O2 → 4 CO2 + 3 H2O
    2 C4H10 + 7 O2 → 8 CO2 + 6 H2O
    C4H10 + 5 O2 → 4 CO2 + 2 H2O
    2 C4H10 + 13 O2 → 8 CO2 + 10 H2O
    30s
  • Q3
    What is the Gram Formula Mass (GFM) of sodium chloride (NaCl)?
    22.99 g/mol
    74.55 g/mol
    58.44 g/mol
    40.00 g/mol
    30s
  • Q4
    What is the correct chemical formula for sulfuric acid?
    HSO4
    H2SO4
    H2SO3
    H2S2O7
    30s
  • Q5
    What is the percent composition of carbon in carbon dioxide (CO2)?
    20% carbon, 80% oxygen
    27.3% carbon, 72.7% oxygen
    33.3% carbon, 66.7% oxygen
    50% carbon, 50% oxygen
    30s
  • Q6
    What is the correct name for the compound Fe2O3?
    ferric oxide
    iron(III) oxide
    iron(II) oxide
    iron oxide
    30s
  • Q7
    How would you write the chemical formula for aluminum sulfate?
    Al2(SO4)3
    AlSO4
    Al3(SO4)2
    Al(SO4)2
    30s
  • Q8
    What is the balanced equation for the reaction of hydrogen gas with oxygen gas to form water?
    2 H2 + O2 → 2 H2O
    3 H2 + O2 → 3 H2O
    H2 + O2 → H2O
    2 H2 + 2 O2 → 2 H2O
    30s
  • Q9
    What is the molar mass of glucose (C6H12O6)?
    180.18 g/mol
    162.14 g/mol
    150.12 g/mol
    198.20 g/mol
    30s
  • Q10
    What is the correct name for the compound NaHCO3?
    sodium bicarbonate
    sodium hydrogen carbonate
    sodium carbonate
    sodium acid carbonate
    30s
  • Q11
    What is the percent composition of oxygen in water (H2O)?
    50.00%
    33.33%
    88.79%
    18.02%
    30s
  • Q12
    What is the correct formula for sodium sulfate?
    NaSO3
    Na2SO3
    Na2SO4
    NaSO4
    30s
  • Q13
    Which of the following equations is balanced?
    H2 + 2O2 → H2O
    H2 + O2 → H2O
    2H2 + O2 → 2H2O
    2H2 + O2 → H2O
    30s
  • Q14
    What is the Gram Formula Mass (GFM) of calcium carbonate (CaCO3)?
    100.09 g/mol
    120.09 g/mol
    78.06 g/mol
    40.08 g/mol
    30s
  • Q15
    What is the name of the compound with the formula FeCl3?
    Iron(II) chloride
    Iron chloride
    Iron(I) chloride
    Iron(III) chloride
    30s

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