What is the relationship between the structure of a substance and the properties of a substance?

The minerals found in bones are deposited by living cells called

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.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?