Can someone help me with this chemistry I have attached?, just helping me understand these problems. Its moles and questions

What forms when chemical reactions combine pollution with sunlight?

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?