If rays may cause increase the risk of skin cancer. But have important applications including and medical imaging

In this synthesis reaction what products will form

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?