keep bar, don't convert it please.

The Haber process is used to synthesize ammonia (NH3) on a large scale by the reaction of nitrogen gas with hydrogen gas as follows: N2(g)+3H2(g)2NH3(g) Consider a reaction between a 1.5L flask containing nitrogen gas and a 18.2L flask of hydrogen gas. Both gases have a temperature of 276K and the pressures inside both flasks is 0.9 bar. What mass of ammonia (in g ) would you expect to be produced at temperature 276K and a pressure of 0.9 bar