1. How much heat must be added to a 38-g sample of aluminum to increase itstemperature by 250.0°C? The specific heat capacity for aluminum is 0.902 J/g °C.62. A solid substance has a mass of 250 grams. It is cooled by 25.00°C and loses4.937 kJ of heat. What is the specific heat capacity of the substance?3. A 10.0 g sample of pure acetic acid, CH3CO2H, is completely burned. The heatreleased warms 2.0 L of water from 22.3°C to 39.6°C.a) Assuming that no heat was lost to the calorimeter, what is the molar enthalpychange of the complete combustion of acetic acid? Express your answer inkJ/mol.b) Will the bonds in the products be longer or shorter than the bonds in thereactants?7

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1. How much heat must be added to a 38-g sample of aluminum to increase its temperature by 250.0°C? The specific heat capacity for aluminum is 0.902 J/g °C.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

1. How much heat must be added to a 38-g sample of aluminum to increase its
temperature by 250.0°C? The specific heat capacity for aluminum is 0.902 J/g °C.
6
2. A solid substance has a mass of 250 grams. It is cooled by 25.00°C and loses
4.937 kJ of heat. What is the specific heat capacity of the substance?
3. A 10.0 g sample of pure acetic acid, CH3CO2H, is completely burned. The heat
released warms 2.0 L of water from 22.3°C to 39.6°C.
a) Assuming that no heat was lost to the calorimeter, what is the molar enthalpy
change of the complete combustion of acetic acid? Express your answer in
kJ/mol.
b) Will the bonds in the products be longer or shorter than the bonds in the
reactants?
7

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