What is the standard entropy of Ca(s) + MgSO4(s) → Mg(s) + CaSO4(s)?

Question

Standard entropy values:
Ca(s): 41.6
MgSO4(s): 91.6
Mg(s): 32.7
CaSO4(s): 106.5

Answer 1

Sum products minu sum reactants. 

(32.7 + 106.5) - (41.6 + 91.6) = 139.2 - 133.2 = 6 

You didnt provide units but they’re probably J/K.