Question
Physics Question on Laws of thermodynamics
A sample of 0.1 g of water at 100°C and normal pressure (1.013 × 105 Nm-2 ) requires 54 cal of heat energy to convert to steam at 100°C. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample, is
A
104.3J
B
42.2J
C
208.7J
D
84.5J
Answer
208.7J
Explanation
Solution
The correct option is (C): 208.7J