0.205 mol of AlPO4 contains how many oxygen atoms?

Which statement about the stamps is correct?

Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone. which solution of sulfuric acid will damage these structures more quickly? a. 0.001% b. 0.005% c. 0.010% d. 0.015%

Why are people not able to scuba dive in the deep part of the ocean