10 mL of 60oC water is mixed with 10 mL of 0oC water in a perfect calorimeter. What is the final temperature?

Answer 1

I hope that is not 600 C water, but 60C water. (under SI, no degree symbol is used).

equal masses? 30C

Answer 2

I understand that it is 30C, but what equation would one use for this?

Answer 3

If you want a formula for use with any amounts, then
[mass cool water x specific heat x (Tfinal-Tinitial)] + [mass warm water x specific heat x (Tfinal-Tinitial)] = 0