One mole of methane (CH₄) contains 6.022 × 10²³ molecules, has a mass of 16 grams, and occupies 22.4 liters at standard temperature and pressure (STP).
Mole Definition:
- Avogadro's number: 6.022 × 10²³ particles
- 1 mole CH₄: 6.022 × 10²³ methane molecules
Properties of 1 Mole CH₄:
- Mass: 16 g/mol (12 for C + 4 for H)
- Volume at STP: 22.4 liters
- Molecules: 6.022 × 10²³ molecules
- Atoms: 5 × 6.022 × 10²³ = 3.011 × 10²⁴ atoms (1 C + 4 H per molecule)
Importants Points:
- 1 mole CH₄ = 6.022 × 10²³ molecules
- Mass: 16 grams
- Volume at STP: 22.4 L