Question

In a process 701J of heat is absorbed by a system and 394J of work is done by the sy s for the process? internal energy change pressure is converted to ice at of ice 4.2 / J gC in tem. What is the change in internal energy ​

Answer 1

Answer:

According to the first law of thermodynamics,

ΔU= q + W (i)

Where, ΔU = change in internal energy for a process

q = heat

W = work

Given, q = + 701 J (Since heat is absorbed)

W = -394 J (Since work is done by the system)

Substituting the values in expression (i), we get

ΔU= 701 J + (-394 J) ΔU = 307 J

Hence, the change in internal energy for the given process is 307 J.