3
Calculate the amount of heat produced when 52. 4 g of methane, CH4,
burns in an excess of air, according to the following equation. CH4(g) +
202(g) — CO2(g) + 2H20(1) AH = -890. 2 kJ. A) Is the reaction endothermic
or exothermic? b) Is the energy of the reactants greater than or less than
the products? c) How much heat in kJ is produced in the reaction when
52. 4 g of methane is burned?
