3) The temperature change is calculated:
ΔT = q / m * cp = 32100 J / (542 * 1.1) g * 4,184 J / g * ° C = 12.9 ° C
4) Kw-h are calculated:
Kw-h = 2 mol H2 * (572 Kw / 2 mol H2) * (3600 s / 1 h) = 2x10 ^ 6 Kw-h
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