What mass and volume of hydrogen is formed by the interaction of 22 g of phenol with 4.3 g of metallic sodium?

Reaction equation:
2C6H5OH + 2Na = 2C6H5ONa + H2.
1) According to the periodic table, we find the molar mass of phenol: 12 * 6 + 1 * 5 + 16 + 1 = 94.
2) Find the molar mass of sodium: 23.
3) Find the amount of phenol substance: 22/94 = 0.23 mol.
4) Find the amount of sodium substance: 4.3 / 23 = 0.2 mol.
Lack of sodium. The calculation is carried out on it.
5) The amount of hydrogen substance is: 2 * 0.2 = 0.4 mol.
6) The mass of hydrogen is: 0.4 * 2 = 0.8 g – the answer.
7) The volume of hydrogen is found by multiplying the amount of hydrogen substance by the molar volume: 0.4 * 22.4 = 8.96 liters – the answer.