6) Given the equation C2H6(g) + O2(g) → CO2(g) + H2O(g) (not balanced), determine the number of liters of CO2 formed at STP when 240.0 grams of C2H6 is burned in excess oxygen gas. 7) Given the equation C2H6(g) + O2(g) → CO2(g) + H2O(g) (not balanced), determine the number of liters of O2 consumed at STP when 270.0 grams of C2H6 is burned. 8) Explain what the term “mean free path” describes. How does it change with decreasing pressure? 9) Why does the rate of effusion increase with a decrease in the molar mass? 10) Define effusion.