If 50.0 ml of ethanol (density = 0.789 g/ml) initially at 7.0 C is mixed with 50 ml of water (density = 1.0 g/ml) initially at 28.

If 50.0 ml of ethanol (density = 0.789 g/ml) initially at 7.0 ○C is mixed with 50 ml of water (density = 1.0 g/ml) initially at 28.4 ○C in an insulted beaker, and assuming no heat is lost, what is the final temperature of the mixture?