Sure! Here are three examples of converting moles to grams, which utilize the concept of molar mass.
Example 1: Converting Moles of Water (H₂O) to Grams
Given: 2 moles of water
Molar Mass of H₂O:
- Hydrogen (H) = 1.01 g/mol
- Oxygen (O) = 16.00 g/mol
- Molar mass of H₂O = (2 × 1.01) + (1 × 16.00) = 2.02 + 16.00 = 18.02 g/mol
Conversion:
Grams = Moles × Molar Mass
Grams = 2 moles × 18.02 g/mol = 36.04 grams
Example 2: Converting Moles of Sodium Chloride (NaCl) to Grams
Given: 1.5 moles of sodium chloride
Molar Mass of NaCl:
- Sodium (Na) = 22.99 g/mol
- Chlorine (Cl) = 35.45 g/mol
- Molar mass of NaCl = 22.99 + 35.45 = 58.44 g/mol
Conversion:
Grams = Moles × Molar Mass
Grams = 1.5 moles × 58.44 g/mol = 87.66 grams
Example 3: Converting Moles of Carbon Dioxide (CO₂) to Grams
Given: 0.75 moles of carbon dioxide
Molar Mass of CO₂:
- Carbon (C) = 12.01 g/mol
- Oxygen (O) = 16.00 g/mol
- Molar mass of CO₂ = 12.01 + (2 × 16.00) = 12.01 + 32.00 = 44.01 g/mol
Conversion:
Grams = Moles × Molar Mass
Grams = 0.75 moles × 44.01 g/mol = 33.01 grams
These examples demonstrate how to perform molar conversions from moles to grams using the respective molar mass of each compound.