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Calculating the work done using the amount of heat absorbed and the change in internal energy.

Find the work done, w, when a system absorbs 104 J of heat and its internal energy decreases by 55 J.

Subject:

Chemistry

Topic:

General Chemistry

Posting ID:

5318

OTA ID:

103439

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Working with enthalpy of formation.

The reaction of 4.49 g of carbon and 9.21 g of oxygen, produced carbon dioxide, and 113.2 kJ of heat. What is the enthalpy of formation of carbon dioxide?

Subject:

Chemistry

Topic:

General Chemistry

Posting ID:

5320

OTA ID:

102509

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heat

Glucose reacts with oxygen to form carbon dioxide and water: If the heats of formation of glucose , carbon dioxide, and water are -1273.3 kJ mol-1, -393.5 kJ mol-1, and -285.8 kJ mol-1. How many grams of glucose must react in order to release (1.00)(10^3) kJ of heat? What is the difference between bond energy, H minus the total change in energy, E?

Subject:

Chemistry

Topic:

General Chemistry

Posting ID:

5321

OTA ID:

103439

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Working with bond energies.

Calculate the bond energy of the reaction: 2 H2 + O2 ---> 2 H2O

Subject:

Chemistry

Topic:

General Chemistry

Posting ID:

5325

OTA ID:

103241

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exothermic reaction

Which of the following would be an exothermic processes? 1) Combustion of C2H5OH (ethyl alcohol) moonshine 2) Decomposition of CaCO3 (calcium carbonate) marble, chalk, limestone 3) Dehydration of CuSO4.5H20 (copper(II) sulfate pentahydrate) "blue-shtone"

Subject:

Chemistry

Topic:

General Chemistry

Posting ID:

5326

OTA ID:

103139

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