Use the following equation to answer the questions.  Use significant figures where appropriate. SHOW ALL YOUR WORK STEP BY STEP NEATLY. 2C 4 H 10 + 13O 2 ---> 8CO 2 +10H 2 O a. What is the molar ratio of C 4 H 10 :CO 2 b. What is the molar ratio of O 2 :H 2 O Solution a) moles of C4H10 = 2 moles of CO2 = 8 molar ratio of C4H10 : CO2 = 2 / 8 = 1 / 4  or 1:4 b) moles of O2 = 13 moles of H2O = 10 molar ratio of O2 : H2O = 13 / 10  (or) 13 :10 (or) = 1.3 .