Kaplan 10th Edition DT Q46

Kaplan's Book

46) This question is a continuation from Question 45. We need to find the heat required to raise the substance from 0°C to 30°C. The substance has already undergone the phase change from solid to liquid at 0°C, so now we can use this equation to find the heat needed.

Where Q is heat energy, m is mass, c is specific heat, and T is temperature

If you are unfamiliar with the specific heat, it is a constant and different to each substance. It describes the amount of heat needed to raise the temperature of 1 kilogram of the substance by 1 degree Celcius. So we can plug in the values necessary to solve this equation.

Where Q is heat energy, m is mass, c is specific heat, and T is temperature

Answer: C