When hydrochloric acid is poured on limestone, the mixture fizzes, releasing a colorless, odorless gas. The equation for this chemical reaction is located below. What is the identity of the gas? CaCO3(s) + 2 HCl(aq) ---> CaCl2(aq) + CO2(g) + H2O(l)

Select one:
a. CaCl2
b. CaCO3
c. CO2
d. H2O

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.