What is the value of AU for a system that performs 13.7 kJ of work on itssurroundings and loses 28.0 kJ of heat?+41.7 kJ-41.7 kJ+14.3 kJ-14.3 kJThe volume of a gas is 88.0 L at a pressure of 450. mmHg. What is the new pressureif the volume is decreased to 70.0 L at constant temperature?13.7 mmHg240. mmHg567 mmHg358 mmHg

Answered: What is the value of AU for a system…

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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One day while camping, a student used a propane stove to boil some water. The student heated 5.00 L of water from 15.6°C to 98.5°C. The molar enthalpy of combustion of propane is -2043.9 kJ/mol and heating the water required 1.38 mol of propane. Determine the efficiency of the propane camp stove if the heat released from the stove was used to heat the water. 62.4 % 38.4% D162 % 61.6%
Please answer question 20 part A
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When 0.900 g of Mg was burned in oxygen in a constant volume calorimeter, 22.3 kJ of energy as heat was evolved. The calorimeter was in an insulated container with 880. g of water at an initial temperature of 13.4 °C. The heat capacity of the bomb in the calorimeter is 660. J/K. The specific heat capacity of water is 4.184 J/g °C. a Calculate AU for the oxidation of Mg (in kJ/mol Mg). AU = -597.67 kJ/mol Mg The amount of heat that would evolve from burning of 1 mole of Mg should be calculated: 24.31 g/mol Mg 0.900 g AU = 9r - 22.3 kJ x == Correct - 602 kJ/mol Mg °C b what will be the final temperature of the water and the bomb calorimeter in this experiment? Final temperature =
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The table lists the specific heat capacities of select substances. Substance Specific heat capacity (J/g °C) lead 0.128 silver 0.235 copper 0.385 iron 0.449 aluminum 0.903 water 4.184 An unknown substance has a mass of 14.5 g.14.5 g. The temperature of the substance increases by 15.3 ∘C15.3 ∘C when 85.4 J85.4 J of heat is added to the substance.
A balloon filled with gas is compressed under an external pressure of 3.0 atm from 4.0 L to 1.0 L. How much work (in Joules) is transferred during the compression? 1 Latm= 101.325J
Automobile airbags contain solid sodium azide, NaN3, that reacts to produce nitrogen gas when heated, thus inflating the bag. 2 NaN3 (s) →→→ 2 Na(s) + 3 N₂(g) Calculate the value of work, w, for the system if 18.4 g NaN3 reacts completely at 1.00 atm and 22 °C. w= -1066 Incorrect J
Calculate the change in internal energy (ΔE) for a system that is giving off 3.0 kcal of heat and is changing from 1.00 L to 8.00 L in volume at a pressure of 2.00 atm. (Remember that 101.3 J = 1 L∙atm; 1 cal = 4.18 J)

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