What are mountins ussaly made from

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

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?