Can I please get help with these problems (1a, b) (2a,b,c) I am not sure if they are right? I am really struggling. Please and thank you.

16 D.I.Y. 1a. Isooctane is the major component in gasoline. How much heat is produce when 2.0 gallons of isooctane burn? The density of isooctane is 2.61 x 10 grams per gallon. C8H18(1) + 12.502(g) 8CO2(g) + 9H2O(1) AH = -5461 kJ/mol b. What mass, in pounds, of carbon dioxide is produced if 1,950 kJ of heat are also produced? Notes: Carbon dioxide gas is one of greenhouse gases that helps maintain moderate temperatures on the Earth's surface. However, humans have increased atmospheric CO, concentration by more than a third since the Industrial Revolution began mostly through burning fossil fuels. The rapid increase of co, level has effects on both Earth's climate as well as ocean acidification. 2a. Carbon dioxide gas, water vapor, and 2,658 kJ of heat are produced when one mole of butane gas (C4H10) reacts with oxygen gas. Write a balanced thermochemical equation for this reaction. 2 C4H10 + 1302 8 602 + 10 H2O 7 16 9 20 A H= -2658 kJ b. What mass of butane, in grams, is necessary to produce 3.2 x 109 kJ of heat? 3.2 X10KT, Imol Cylio, Imol Cuttio 58.124 g X 2658KJ 2 mol C4H10 Imolatio 35 g C4H10 C. What mass, in grams, of carbon dioxide is produced if 1,950 kJ of heat are also produced? CO2 16