Use the equation and table of information given below to complete the following questions:2Ag2S(s) +O2(g) →2Ag2O(s) +2S(s)

Substance ΔHf0 (kJ /mol)

Ag2O(s) -31.0

Ag2S(s) -32.6

H2S(g) -20.6

H2O(l) -286

a) Calculate the DH for this reaction in kJ/mol

b) Calculate the enthalpy change in kJ when 45 grams of Ag2S is completely reacted.

c) Suppose all of the heat you calculated (in part b) is applied to cool a sample of water from 95oC to 23oC. What mass of water can be heated? Include units in your answer. The specific heat of water is = 4.18 J/g.oC.