A reaction vessel of volume 20.0 L contains 5.0 mol of nitrogen gas, 3.0 mol of hydrogen gas, and 2.5 mol of oxygen gas at 298 K initially. The gases react forming NH3(g) ammonia and H2O(l) water. Calculate the number of moles remaining for each gas and the total number of moles of gas. Calculate teh partial pressures for each gas and the total pressure.