A reaction flask initially contains 114 torr of CO and 278 torr of H2. The reaction is allowed to occur until the pressure stops changing, at which...

A reaction flask initially contains 114 torr of CO and 278 torr of H2. The reaction is allowed to occur until the pressure stops changing, at which point the total pressure is 193 torr. Determine the percent yield for the reaction. Assume a constant temperature and that no other reactions occur other than the one indicated. Also, assume that this occurs in a closed steel reactor, so the volume will not change