A 4.31-g sample of octane is burned in a bomb calorimeter containing 2.00 × 10² g H2O. How much energy, in cal, is released if the water temperature increases 5.46 °C? Express your answer in scientific notation. Enter your answer in the provided box. x 10 (select) cal

A 4.31-g sample of octane is burned in a bomb calorimeter containing 2.00 × 10² g H2O. How much energy, in cal, is released if the water temperature increases 5.46 °C? Express your answer in scientific notation. Enter your answer in the provided box. x 10 (select) cal

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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Historically, naphthalene was used as the main ingredient in mothballs and is easily recognized by its characteristic smell. When 0.500 g of naphthalene (C10H8) is burned in a bomb calorimeter, the temperature increased from 20.0 °C to 26.4 °C. The heat capacity of the calorimeter is 420 J/°C. Calculate the heat of combustion of naphthalene in kJ/mol.
A sample of 23.9 g of ammonium nitrate, NH,NO3, was dissolved in 133.8 g of water in a coffee cup calorimeter. The temperature changed from 28.10 °C to 17.42 °C. Calculate the heat of solution of ammonium nitrate in kJ/mol. Assume that the energy exchange involves only the solution and that the specific heat of the solution is 4.18 J/g°C. Heat of solution = i kJ/mol eTextbook and Media Save for Later Attempts: 0 of 2 used Submit Answer ype'here to search a 回D 中 ho 米 10 144 insert prt sc @ %23 %24 3 6. 7 8. backsp R Y A S D G H K pause C V B N ||M. alt ctrl alt
Coal power plants burn large amounts of coal, C(s), in an O2(g) atmosphere to generate electricity. The chemical reaction responsible for producing this energy is shown below: C(s) + O2(g) → CO2(g) Determine the mass in grams of CO2 produced when 102 metric tons of C(s) are completely burned in an O2 atmosphere (1 metric ton = 103 kg = 106 g). Don't include units in your answer
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Methyl alcohol (CH3OH) is also known as wood alcohol and can be used as fuel. When one mole of methyl alcohol is burned, 1453 kJ of heat are evolved. When methyl alcohol is burned in a bomb calorimeter, 71.8 kJ of heat are evolved by the methyl alcohol. If the density of methyl alcohol is 0.791 g/mL, find the volume of methyl alcohol burned.
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A student wishes to determine the heat capacity of a coffee-cup calorimeter. After she mixes 90.5 g of water at 67.5°C with 90.5 g of water, already in the calorimeter, at 19.1°C, the final temperature of the water is 35.0°C. Calculate the heat capacity of the calorimeter in J/K. Use 4.184 J/g°C as the specific heat of water. Enter your answer to three significant figures in unit of J/K.
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