Question

What is the change of entropy for a heat engine using 500.0j at 20.0c

Answer 1

The formula to find change in entropy is given by :

$Change in entropy = \frac{Q}{T}$

where Q is change in heat and T is temperature.

We are given Q = 500 joule and T = 20 degree C

Plugging these values in the formula,

$Change in entropy = \frac{500}{20}$

We get change in entropy = 25 J/Celsius.

Answer 2

1.71 J/K 
hope it helps :D!!