Mole to Mass Conversion Worksheet
Practice converting between moles and mass for various chemical compounds.
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Mole to Mass Conversion Practice
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Read each question carefully and perform the necessary mole to mass or mass to mole conversions. Show all your work and include units in your final answers. Use the provided molar masses (or calculate them where necessary).
1. What is the mass in grams of 2.5 moles of water (H₂O)? (Molar mass of H₂O = 18.02 g/mol)
2. Calculate the mass in grams of 0.75 moles of carbon dioxide (CO₂). (Molar mass of CO₂ = 44.01 g/mol)
3. How many moles are present in 50.0 grams of oxygen gas (O₂)? (Molar mass of O₂ = 32.00 g/mol)
4. Determine the number of moles in 125 grams of methane (CH₄). (Molar mass of CH₄ = 16.05 g/mol)
5. To convert from moles to mass, you must by the .
6. The molar mass of an element is numerically equal to its on the periodic table, expressed in units of .
7. If you have 3.0 moles of sodium chloride (NaCl), what is its approximate mass? (Molar mass of NaCl = 58.44 g/mol)
19.5 g
175.3 g
58.44 g
3.0 g
8. Which of the following correctly represents the unit for molar mass?
mol/g
g/mol
g/L
mol/L
9. A sample of an unknown compound has a mass of 88.0 grams and contains 2.0 moles. What is the molar mass of this compound?