In a flexible container, 1 mol CH4(g) reacts with 4mol N2O (g), chemistry homework help

In a flexible container, 1 mol CH4(g) reacts with 4mol N2O (g), chemistry homework help

In a flexible container, 1 mol CH4(g) reacts with 4mol N2O (g). The gases are at 373K and the external pressure is 1atm. After the reaction, the products are returned to 373K. What work is done? 0.1kJ=1L-atm, R=0.082 L-atm/mol-K
a. -3.05kJ b. 0 c. +3.05kJ d. -6.1 kJ
(2) In a flexible container, 1 mol CH4(g) reacts with 2 mol O2(g). The gases are at 373K and the external pressure is 1atm. After the reaction, the products are returned to 373K. What work is done? 0.1kJ=1L-atm, R=0.082 L-atm/mol-K
a. w >0 b. w=0 c. w<0 d. it depends on the extent of reaction