One gram of water is heated from 0°C to 100°C at a constant pressure of 1 atm. Determine the approximate change in internal energy (in cal) of the water.
A) 160
B) 130
C) 100
D) 180
E) 50

Question

Quizplus · Accepted Answer

The change in internal energy of water when heated from 0°C to 100°C is approximately equal to the heat added, which is the specific heat capacity of water (1 cal/g°C) multiplied by the temperature change (100°C), resulting in 100 cal.

One Gram of Water Is Heated from 0°C to 100°C