16. The volume of a system is increased from 2.73 dm' to 23.73 dm' at an external pressure of 2.35 atm.Calculate the work done by the system or surroundings?Select one:a.-49 Latmb.-5.00 k)C+0.500 k)d.-5000.)e-5.99 x 10)

Work done is calculated as the product of pressure and change in volume as W=-P×ΔV P is the…

Answered: 16. The volume of a system is increased…

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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A chemical reaction involving gases takes place in a vessel fitted with a movable piston. The reaction is accompanied by a decrease in volume, so that there is a work flow from the surroundings of 10. kJ. At the same time, 100. kJ of heat flow is transferred from the surroundings. The energy change, AU, in kJ, for the reaction is -90. -110. 110. 100. 90.
Given the standard heats of formation for the following compounds, calculate AH of the reaction at 298". 12NH 210e SHNO30 4NO) + 14HO 459 -133.9 91.3 -2418 0-4650 O-2259 4270kJ O 3540
Consider 1.2 moles of a diatomic gas that expands adiabatically from an initial pressure of 5.0 x 10^5 Pa and a temperature of 400 K to a final pressure of 1.0 x 10^5 Pa. a) Find the final temperature. b) Find the final volume. c) Find the work done by the gas. d) Find the change in internal energy of the gas.
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Thefollowing combustion reaction was carried out using 3.88 g O2 and excess CH4.CH4 + 2O2 → CO2 + 2H2O.After the reaction was complete, the value of qsurr was determined from temperature measurements made in the surroundings. It was found that qsurr = +53.5 kJ. a. What is the value of qrxn? (This means the same as qsys.)b. Calculate the moles of reaction that was present in this experimental run.c. Divide the qrxn by the moles of reaction to determine ∆rH. Pay careful attention tothe sign, units, and sig figs of your answer.
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6. Consider the following reactions: a. Hgm → Hg) b. 30a(g) → 203(®) c. CUSO, 5H2(s) → CuSO4te) + 5H.O) d. Hatg) + Fatg) → 2HF) At constant pressure, determine which reactions have work done by the system on the surrounding, and work done by the system's surroundings.
A 250 kJ of work was done on a system and as a consequence, released 350 kJ of heat. Which of the following statements is correct? The sign of work is positive, the sign of heat is positive, and the change in internal energy of the system is 600 kJ. The sign of work is positive, the sign of heat is negative, and the change in internal energy of the system is -100 kJ. O The sign of work is negative, the sign of heat is positive, and the change in internal energy of the system is +100 kJ. O The sign of work is negative, the sign of heat is negative, and the change in internal energy of the system is -600 kJ. O The sign of work is negative, the sign of heat is positive, and the change in internal energy of the system is 600 kJ.
6. In compressing a gas at constant pressure, work is done on the system and the internal energo increases. The work done is given by P times AV, where AVValmunal Note that since the is smaller than Vital In calculating the change in internal energy, which gas is compressed, Vinal is smaller than V of the following expressions should be used? Explain. a) w = PAV b) w=-PAV
Which of the following 1.00 mole of fossil fuel when burned (combustion in open atmospheres) will have the largest magnitude of work done (by the system or to the system)? Consider the products to be H,0(1), CO,(g) or combinations of these two substances. Select one: O a. liquid methanol (CH,OH) O b. liquid octane (C3H13) Oc. solid graphite, C(s) o d. All of the choices would have equal magnitude of work since the combustion is done in open atmosphere. O e. gaseous H2 (hydrogen)

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16. The volume of a system is increased from 2.73 dm' to 23.73 dm' at an external pressure of 2.35 atm. Calculate the work done by the system or surroundings? Select one: a.-49 Latm b.-5.00 k) C+0.500 k) d.-5000.) e-5.99 x 10)