posted by Alicia .
10.0 mol of ammonia gas is injected into a 4.0 L container. At equilibrium 1.2 mol of nitrogen gas is found in the container. The number of moles of ammonia gas left in the container must be which of the following?
N2(g) + 3H2(g) <=====> 2NH3(g) + 94 kJ
a. 8.8 d. 6.4
b. 2.4 e. 9.2