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# (a) When a 0.235-g sample of benzoic acid is combusted in ISBN: 9780321696724 27

## Solution for problem 101AE Chapter 5

Chemistry: The Central Science | 12th Edition

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Problem 101AE

(a) When a 0.235-g sample of benzoic acid is combusted in a bomb calorimeter (Figure), the temperature rises 1.642 °C. When a 0.265-g sample of caffeine, C8H10O2N4, is burned, the temperature rises 1.525 °C. Using the value 26.38 kJ/g for the heat of combustion of benzoic acid, calculate the heat of combustion per mole of caffeine at constant volume.

Why is a stirrer used in calorimeters?

Figure Bomb calorimeter. (b) Assuming that there is an uncertainty of 0.002 °C in each temperature reading and that the masses of samples are measured to 0.001 g, what is the estimated uncertainty in the value calculated for the heat of combustion per mole of caffeine?

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Chemistry Chapter 1 Notes Chemistry— the study of Matter Hypothesis— a tentative explanation for a series of observations. Theory— a model with which one is able to explain and make a further prediction about natural phenomena. Natural law— a concise statement, often in mathematical terms, that summarizes observations of certain natural phenomena. The form of reasoning...

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##### ISBN: 9780321696724

Since the solution to 101AE from 5 chapter was answered, more than 330 students have viewed the full step-by-step answer. The answer to “(a) When a 0.235-g sample of benzoic acid is combusted in a bomb calorimeter (Figure), the temperature rises 1.642 °C. When a 0.265-g sample of caffeine, C8H10O2N4, is burned, the temperature rises 1.525 °C. Using the value 26.38 kJ/g for the heat of combustion of benzoic acid, calculate the heat of combustion per mole of caffeine at constant volume.Why is a stirrer used in calorimeters?Figure Bomb calorimeter. (b) Assuming that there is an uncertainty of 0.002 °C in each temperature reading and that the masses of samples are measured to 0.001 g, what is the estimated uncertainty in the value calculated for the heat of combustion per mole of caffeine?” is broken down into a number of easy to follow steps, and 110 words. Chemistry: The Central Science was written by and is associated to the ISBN: 9780321696724. This textbook survival guide was created for the textbook: Chemistry: The Central Science, edition: 12. The full step-by-step solution to problem: 101AE from chapter: 5 was answered by , our top Chemistry solution expert on 04/03/17, 07:58AM. This full solution covers the following key subjects: combustion, heat, Caffeine, temperature, sample. This expansive textbook survival guide covers 49 chapters, and 5471 solutions.

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