General chemistry 1 cumulative final exam questions and answers

General chemistry 1 cumulative final exam questions and answers What is the sum of all coefficients after balancing the following equation: C12H8N2+O2+OH- ⟶ CO32- +H2O+N2 ️️68 What is the coefficient for O2 after balancing the following equation? O2 + C10H22 ⟶ CO2 + H2O ️️31 Acetylene torches burn acetylene by combining it with oxygen gas to produce carbon dioxide and water according to the following balanced equation: 2 C2H2 + 5 O2 ⟶ 4 CO2 + 2H2O Use the following molar masses: O2 is 32.00 g/mol, CO2 is 44.01 g/mol, H2O is 18.02 g/mol If there are 208 g acetylene and 647 g of oxygen gas, which will be the limiting reactant? ️️C2H2 If only 558 g of CO2 were actually produced in the above reaction (2 C2H2 + 5 O2 ⟶ 4 CO2 + 2H2O), what is the percent yield of the reaction? ️️79.4%