Nuclear fusion occurs within stars when which of the following happens? Protons combine with protons.
Protons combine with electrons.
Neutrons combine with protons
Neutrons combine with neutrons.

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g

How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj

Scuba divers use tanks of compressed air to them breathe. gases can be compressed because?