1. The problem statement, all variables and given/known data Imagine that the temperature of 255 g of aluminum sitting in the sum increases from 278 K to 294 K. By how much has its entropy increased? 2. Relevant equations Q=mcΔT ΔS=Q/T 3. The attempt at a solution Q=(255 g)(.90 J/gK)(294 K -278 K) Q=3672 J ΔS=Q/T ΔS=3672 J / 294 K ΔS= 12.5 J/K This answer is incorrect, but I don't know why.