We are asked to determine the minimum mass of hydrogen gas required to produce 366 kJ of heat.

We'll use the thermochemical equation to calculate the mass of H_{2}.

Molar mass H_{2} = 2.02 g/mol

2 H_{2}(g) + O_{2}(g) → 2 H_{2}O(g) ΔH = –483.5 kJ/mol

Hydrogen gas reacts with oxygen to form water.

2 H_{2}(g) + O_{2}(g) → 2 H_{2}O(g) ΔH = –483.5 kJ/mol

Determine the minimum mass of hydrogen gas required to produce 366 kJ of heat.

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