Question: for this question use the main assumptions of the kinetic molecular theory of gases: 1. gases are made up of molecules which are relatively far apart. 2. the molecules are in motion at high speeds. 3. the molecular collisions are perfectly elastic. 4. increase in temperature increases the kinetic energy of the molecules. the idea that no energy is lost when gas molecules hit the walls of a container or each other is explained by, possible answers:   1, 2, 3, 4.

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?