A student mixes 95.1g of water at 77.5 degree C with 42.7g of water at 141.1 degree C in an insulated flask. What is the final temperature of the combined water?

Answer 1

heat lost by one sample + heat gained by the other sample = 0
[mass water1 x (Tfinal-Tinitial)] + [mass water 2 x (Tfinal-Tinitial)] = 0
Solve for Tfinal.

Answer 2

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Answer 3

How many joules of heat energy are absorbed when 100 grams of water are heated from 20 degrees Celsius to 30 degrees Celsius?