1. Find the molar mass of CO2:
* Carbon (C) has a molar mass of 12.01 g/mol
* Oxygen (O) has a molar mass of 16.00 g/mol
* CO2 has one carbon and two oxygen atoms, so its molar mass is: 12.01 + (16.00 x 2) = 44.01 g/mol
2. Use the formula:
* moles = mass / molar mass
3. Plug in the values:
* moles = 42 g / 44.01 g/mol
* moles ≈ 0.954 mol
Therefore, there are approximately 0.954 moles in 42 grams of CO2.
