How many millimeters are equivalent to 8 meters?

a.
0.008 mm
b. 0.8 mm
c. 80 mm
d.
8,000 mm

The reaction q+r2=r2q is found to be first order in r2 and

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%

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?