Which of these is an example of physical change?

a. boiling water
b. digesting food
c. breaking glass
d. shoveling snow

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 the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Convert .347 kilometers to miles show your work