Here is the question: 8) [1.0/3.0] 1.6 kg of water at 34oC is mixed with 2.0 kg of water at 58o. in a well insulated container. a) What is the final temperature of the water (in degrees Celsius)? b) What is the approximate change of entropy? (Use the average temperature for the entropy calculation.) Part a was easy enough... I got 47.3 oC I've tried calculating part b in multiple ways, and I am getting a very small number- which is what my answer is actually suppose to be- BUT - it is not right. Any help?? Thanks.