A 7.50 g sample of a nonvolatile, non-electrolyte is dissolved in 75.0 g of water. The solution boils at 100.56°C. If the molal-boiling-point constant 0.52°C/m for water, the molar mass of the solute is g/mol.​

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?