A student measured the pH of his soda and found it to be 4.5.

Calculate the [H3O+] in the soda.

List four observations that indicate that a chemical reaction may be taking place

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?

If an atom has 12 protons and 13 neutrons