Which of the following is considered a compound? Ag, silver

H2, hydrogen gas

CO2, carbon dioxide gas

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%

In which phase(s) do the molecules take the shape of the container?

What is a metal replacement reaction