(1.7490×10^1) g of an unknown sample is reacted with excess reagents inside a simple calorimeter. The mass of thealuminum cup making the outside of the calorimeter is (9.9200×10^1) g. There is (1.01×10^2) g of water inside the calorimeter. If the temperature of the calorimeter goes from 20.0 degrees C to (2.6300×10^1) degrees C and the molar mass of the unknown is (2.580×10^1) g/mol, what is the molar enthalpy of reaction with respect to the unknown? (Answer to 3 S.D. in kJ/mol)
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