Question 17 (1 point) How many moles of a gas sample are in a 15.0 L container at 230 K and 306 kPa?
(The gas constant is
L kPa
8.31
mol K
D
Round your answer to one decimal place and enter the number only with no units.
Your
Answer

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?