How many steps of calculations would each of the following require? Water at 0°C is warmed to 55°C

Steam at 100°C is cooled to
15°C

H2O goes from -23°C to 75°C

water at 0°C is warmed to steam at 100°C

Steam at 110°C is cooled to ice at 0°C

The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?