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Molar massMethane
Molar mass of CH4 (Methane)
The molar mass of CH4 is 16.04 g/mol.
Natural gas; it burns cleanly to carbon dioxide and water.
Step-by-step calculation
Add up the atomic masses of every atom in the formula:
1 × 12.011 + 4 × 1.008 = 16.04 g/mol
| Element | Atoms | Atomic mass (u) | Subtotal (g/mol) | % by mass |
|---|---|---|---|---|
| Carbon (C) | 1 | 12.011 | 12.011 | 74.87% |
| Hydrogen (H) | 4 | 1.008 | 4.032 | 25.13% |
| Molar mass of CH4 | 16.04 g/mol | |||
Moles to grams for CH4
Multiply the number of moles by 16.04 g/mol to get the mass, and divide a mass by 16.04 g/mol to get the moles.
| Amount (mol) | Mass (g) | Mass (g) | Amount (mol) |
|---|---|---|---|
| 0.1 mol | 1.60 g | 1 g | 0.0623 mol |
| 0.25 mol | 4.01 g | 5 g | 0.3117 mol |
| 0.5 mol | 8.02 g | 10 g | 0.6233 mol |
| 1 mol | 16.04 g | 50 g | 3.1166 mol |
| 2 mol | 32.09 g | 100 g | 6.2332 mol |
| 5 mol | 80.22 g | 500 g | 31.1662 mol |
Frequently asked questions
What is the molar mass of CH4?
The molar mass of CH₄ (methane) is 16.04 g/mol, so one mole of methane weighs 16.04 grams.
How do you calculate the molar mass of CH4?
Multiply each element’s atomic mass by the number of atoms in the formula and add the results: 1 × 12.011 + 4 × 1.008 = 16.04 g/mol.
What percentage of CH4 is carbon?
Carbon makes up 74.87% of the mass of CH₄.
How many grams are in one mole of CH4?
One mole of CH₄ has a mass of 16.04 grams, and contains 6.022 × 10²³ formula units.