What volume of hydrogen is formed during the complete decomposition of 220 liters of methane to simple substances?

To solve, we write the equation:
CH4 = C + 2H2 – thermal decomposition of methane occurs at a temperature of 1000 degrees, hydrogen and soot are released (C);
Let’s calculate the molar masses of methane, hydrogen:
M (CH4) = 16 g / mol;
M (H2) = 2 g / mol.
Determine the amount of methane moles by applying Avogadro’s law:
1 mol of gas at normal level – 22.4 liters;
X mol (CH4) – 220 liters from here, X mol (CH4) = 1 * 220 / 22.4 = 9.82 mol.
Let’s make the proportion:
9, 82 mol (CH4) – X mol (H2);
-1 mol -2 mol hence, X mol (H2) = 9.82 * 2/1 = 19.64 mol.
Find the volume of hydrogen:
V (H2) = 19.64 * 22.4 = 439.9 liters.
Answer: The volume of hydrogen is 439.9 liters.