Cual es la formula universal de Zn - Zn +2
2 Ag - 2
2 Ag

se oxida y cual se reduce

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?

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

Why is it incorrect to balance a chemical equation by changing the subscripts? explain.