Solve for the unknown by showing your work. 1) Find the volume of 28 g CO2 at STP?

2) Using your answer in #1, determine the density of carbon dioxide.

3) In the combustion reaction of methane gas : CH4 (g) + O2 (g) --> CO2 (g) + 2 H2O (g)

4.0 X 10 exp 23 molecules of CH4 was used. Determine

(a) the moles of CO2 produced

(b) using your answer in (a), calculate the volume of CO2 produced at STP

(c) the volume of oxygen used in the reaction at STP