Please help this is chemistry.

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

Fossil fuels are organic compounds that are made from