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Moles

Quiz by Mrs E Laxton

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15 questions
Show answers
  • Q1
    What is Avogadro's constant?
    6.022 x 10^23
    3.1415
    2.718
    9.80665
    30s
  • Q2
    Which of the following is a unit used to measure the amount of substance?
    Kilogram
    Mole
    Second
    Meter
    30s
  • Q3
    What is the molar mass of carbon (C)?
    12.01 g/mol
    16.00 g/mol
    22.99 g/mol
    1.008 g/mol
    30s
  • Q4
    What is the mole ratio of hydrogen to oxygen in water (H2O)?
    3:1
    1:2
    2:1
    1:1
    30s
  • Q5
    What is the molar mass of oxygen (O)?
    12.01 g/mol
    16.00 g/mol
    1.008 g/mol
    22.99 g/mol
    30s
  • Q6
    How many moles of carbon dioxide (CO2) are present in 44 grams of carbon dioxide?
    3 moles
    0.5 moles
    2 moles
    1 mole
    30s
  • Q7
    What is the formula for calculating moles?
    moles = pressure × volume
    moles = mass / molar mass
    moles = volume × molarity
    moles = concentration / volume
    30s
  • Q8
    What is the mole ratio of hydrogen to nitrogen in ammonia (NH3)?
    2:1
    1:3
    3:1
    1:1
    30s
  • Q9
    What is the mass of 0.5 moles of water (H2O) if the molar mass is approximately 18 g/mol?
    9 g
    36 g
    4.5 g
    18 g
    30s
  • Q10
    If 3 moles of sodium chloride (NaCl) have a mass of 174.6 g, what is the molar mass?
    58.4 g/mol
    58.2 g/mol
    58.6 g/mol
    57.9 g/mol
    30s
  • Q11
    How many moles are in 50 grams of Water (H2O)? (Given: Molar mass of H = 1 g/mol and O = 16 g/mol)
    2.50 moles
    1.56 moles
    2.78 moles
    3.12 moles
    30s
  • Q12
    How many moles are there in 60g of Carbon (C)? (Given: Molar mass of C = 12 g/mol)
    3 moles
    5 moles
    4 moles
    2 moles
    30s
  • Q13
    What is the mass in grams of 3 moles of oxygen gas (O2)? (Given: Molar mass of O = 16 g/mol)
    32 grams
    48 grams
    64 grams
    96 grams
    30s
  • Q14
    What is the mass in grams of 5 moles of Nitrogen gas (N2)? (Given: Molar mass of N = 14 g/mol)
    120 grams
    90 grams
    140 grams
    70 grams
    30s
  • Q15
    How many moles are in 98 grams of Sulfuric acid (H2SO4)? (Given: Molar mass of H = 1 g/mol, S = 32 g/mol and O = 16 g/mol)
    0.5 mole
    1.5 moles
    1 mole
    2 moles
    30s

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