PLZ HELP: Identify each of the following as a covalent compound or ionic compound. Then provide either the formula for the compounds identified by name or the name for those identified by formula. A. Li2O
B. Dinitrogen Trioxide
C. PCl3
D. Maganese(lll) oxide
E. Calcium bromide

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?