Plz explain this question . o, (g) +6h,o ); au= -1600 kcal 2c.h, (g) + 50, (g) 4co, (g) +2h,o (); au=-620 kcal calculate the heat of

10. At constant volume at 27°C, 2C H, (g)+ 150, (g) 12CO, (g) +6H,O ); AU= -1600 kcal 2C.H, (g) + 50, (g) 4CO, (g) +2H,O (); AU=-620 kcal Calculate the heat of polymerisation of acetylene to benzene at constant pressure. (-131-2 kcal)