3 The boiler in a steam engine converts a large quantity of

3.) The boiler in a steam engine converts a large quantity of water to steam. This process involves the transfer of 2.50 x 108 J as heat. The safety value relieves excess pressure doing 1.66 x 10* J of work expanding against the outside atmosphere. What is the net change in the internal energy of the water-steam system?

Solution

Solution:

Using the first law of thermodynamics.

=> Q = U + W

Given Q = 2.50 x 10^8 J

W = 1.66 x 10^8 J

Now, U = Q - W

=> U = 2.50 x 10^8 - 1.66 x 10^8

=> U = 0.84 x 10^8 J

So change in internal energy of the water steam system is = 0.84 x 10^8 J

please comment for Queries.

Please rate thanks.