A mixture of 6.0mol of H2(g) and 3.0mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 27 degree C.

A mixture of 6.0mol of H2(g) and 3.0mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 27 degree C. The mixture is ignited with a spark and it reacts to form liquid water.Find the temperature of water.