A sample of 2.21 grams of Z is dissolved into 500 grams of water which is in a styrofoam
coffee cup. The temperature is monitored and
is found to drop from 23.512◦C to 23.269◦C.
What is ∆Hsolution for substance Z? Assume
no heat is lost/gained by the cup itself. The
specific heat of water is 4.184 J/g·
◦C and the
molecular weight of Z is 148 g/mol.
Answer in units of kJ/mol of Z.