I AM GIVING A LOT OF POINTS SO PLEASE HELP ME Can someone please help me with this?
Rules:

Label the section of the roller coaster where the kinetic or potential energy is.

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3

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?

Someone do this for me. im really stuck