If 10 calories of heat are added to two grams of liquid water what is the temperature of the water

1 answer

If you don't know the temperature at the start you can't know the final T; however, you can calculate delta T.
q = m*c*delta T
10 = 2 x 1 x dT. Solve for delta T. I get T will be 5 degrees C warmer than where it started.