ANSWER ONLY

Question 30 1 pts Given the thermochemical equation: C2H5OH + 302 2 CO2 + 3H20 AH = -1366.7 kJ/mol What is the amount of heat produced when 12.52 grams of ethanol are reacted with excess oxygen? (C2H5OH, MM = 46.08 g/mol) +371 kJ 0 -371 kJ O-782 kJ 0 782 kJ > Question 31 1 pts Given the following thermochemical equation: CH4 (g) + 202(g) CO2(g) + 2H20 (1) DH = -890.4 kJ/mol How many kJ of heat is given off when 82.5 g of CO2 is produced? O +1765 kJ O +1670 kJ 0 -1670 kJ 0-1765 kJ Question 32 1 pts A 345 J of work was done on the system. At the same time, the system absorbs 148 ) heat from the surroundings. What is the AE of the system? +493) O-493) 0 -197) 0 +197) Question 33 1 pts Given the following thermochemical equation: CaCO3(s) CaO(s) +CO2 (g) AH=177.8 kJ/mol What is the change in the internal energy for the reaction (AE) if 152-grams of CaCO3(s) is decomposed into CaO(s) and that CO2(g) produced expanded from 2.0 L to 3.5 L against a pressure of 12.3 atm? Note: For the heat absorbed by the system, use the amount of heat absorbed in the chemical reaction. O 4.68 x 105) 2.68 x 105) O 5.68 x 105) O 3.68 x 105)