Answered: Topic: Thermodynamics Question: 1. In…

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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Topic: Thermodynamics

Question:

1. In a bomb calorimeter, 75.8 grams of a wax is burned completely with oxygen. The surrounding water, 250 grams, increases temperature from 24.3 °C to 68.2 °C. The specific heat of water is 4.18 J/g°C. What is the heat of combustion for wax in kJ per gram? You may assume all the energy transfers to the water.

2. How many kJ of heat would be released if 47.60 grams of methane, CH4(g), is used to cook your hot dog?

CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)

CH4(g); ∆Hf° = -74.8 kJ/mol

CO2(g); ∆Hf° = -393.5 kJ/mol

H2O(g); ∆Hf° = -241.8 kJ/mol

of heating required to bring -56 °C ice to 148 °C steam?

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