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What is the heat absorbed by the water

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1) A styrofoam calorimeter is filled with (4.20x10^1)grams of water. The temperature of the calorimeter goes from 25.0 to (2.950x10^1)degrees Celcius. What is the heat absorbed by the water? (Answer to 3 sig digs in Joules)

Note: Your answer is assumed to be reduced to the highest power possible.

2) (2.304x10^1) g of an unknown sample is reacted with excess reagents inside a simple calorimeter. The mass of the aluminum cup making the outside of the calorimeter is (9.7400x10^1) g. There is (1.4000x10^2) g of water inside the calorimeter. If the temperature of the calorimeter goes from 20.0 degrees C to (2.280x10^1) degrees C and the molar mass of the unknown is (4.21x10^1) g/mol, what is the molar enthalpy of reaction with respect to the unknown? (Answer to 3 S.D. in kJ/mol)

Note: Your answer is assumed to be reduced to the highest power possible.

Reference no: EM131661254

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