1. Find the molar mass of CH4:
* Carbon (C) has a molar mass of 12.01 g/mol.
* Hydrogen (H) has a molar mass of 1.01 g/mol.
* CH4 has one carbon atom and four hydrogen atoms, so its molar mass is: 12.01 g/mol + (4 * 1.01 g/mol) = 16.05 g/mol
2. Use the following formula to calculate moles:
* Moles = Mass (g) / Molar Mass (g/mol)
3. Substitute the values:
* Moles = 200 g / 16.05 g/mol
* Moles ≈ 12.46 mol
Therefore, there are approximately 12.46 moles of CH4 in 200 grams of CH4.
