1 Which of the
components of the universe best
describes a system of stars, gases
and dust held together by gravity?
A. Galaxy
B. Planet
C. Comet
D. Solar system
NO FILES

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%

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

How many moles of co2 are produced during the complete combustion of 3.6 moles of c2h6