Is this chemical reaction an example of a redox reaction? 4CuCl (aq) + O2 (g) → 2Cl2 (g) + 2Cu2O (s)

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles