A rigid tank of volume 0.1 m3 is fi lled from a supply line at 127°C and 2 bar, as drawn in the following fi gure. It is initially at vacuum. The valve is opened, and the tank fi lls until the pressures equilibrate. The valve is then shut. During this process, 6,000 [J] of heat transfers to the surroundings.
The fi nal temperature in the tank is 227°C. The surroundings are at 27°C. What is the entropy change of the universe for this process? Take the heat capacity to be constant,

Transcribed Image Text:

CP = 7|2 R.