posted by Jamie .
Write the formula, substitute numbers and units(labels)Mike mixed 20g of 60C water with 40g of 25C water. The final temperature was 39C.
1.Calculate the change of temperature for hot water.
2.Calculate the calories transferred from the hot water.
3.Calculate the amount of heat transferred to the cold water.
heat lost by hot water + heat gained by cold water = 0 BUT something is wrong here because it doesn't. Heat was lost somewhere to the surroundings.
1. Temperature change is 60-39.
2. mass water x specific heat x (Tfinal-Tinitial) = 20g x (1 cal/g*c) x (39-60) = ??
3. 40g x (1 cal/g*c) x (39-25)= ??