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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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How much work (in J) is required to expand the volume of a pump from 0.0 L to 2.5 L against an external pressure of 1.1 atm?
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- A gas absorbs 15.2 J of heat and then performs 15.2 J of work. The change in internal energy of the gas is 0.0 J 15.2 J -15.2 J -30.4 J 30.4 Jarrow_forwardA five liter cylinder contained 2 moles of oxygen gas at 20°C. Due to sudden leakage through the hole, all the gas escaped into the atmosphere and the cylinder got empty. If the atmospheric pressure is 1.0 atmosphere, calculate the work done by the gas in joule. (1 L atm = 101.3 J)arrow_forwardConsider an ideal gas enclosed in a 1.00 L container at an internal pressure of 24.0 atm. Calculate the work, w, if the gas expands against a constant external pressure of 1.00 atm to a final volume of 24.0 L. -810.64 w = Incorrect Now calculate the work done if this process is carried out in two steps. 1. First, let the gas expand against a constant external pressure of 1.50 atm to a volume of 16.0 L. 2. From the end point of step 1, let the gas expand to 24.0 L against a constant external pressure of 1.00 atm. 3090.565 w = Incorrectarrow_forward
- Measurements show that the energy of a mixture of gaseous reactants increases by 396. kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that 122. kJ of work is done on the mixture during the reaction. Calculate the change in enthalpy of the gas mixture during the reaction. Be sure your answer has the correct number of significant digits. O exothermic Is the reaction exothermic or endothermic? O endothermicarrow_forward1. When gasoline burns in an automobile engine, the heat released (325 J) causes the products CO2 and H20 to expand, which pushes the pistons outward. Excess heat is removed by the car's cooling system. If the work associated with the expanding gases is equal to 451 J, how much is the change in internal energy of the gases? How much is the change in internal energy of the piston?arrow_forwardMeasurements show that the energy of a mixture of gaseous reactants increases by 301. kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that – 104. kJ of work is done on the mixture during the reaction. Calculate the change in enthalpy of the gas mixture during the reaction. Be sure your answer has the correct number of significant digits. O exothermic ? Is the reaction exothermic or endothermic? O endothermicarrow_forward
- In a gas expansion, 74 J of heat is absorbed from the surroundings, and the energy of the system decreases by 116 J. Calculate the work done.arrow_forwardCalculate the work (in J) associated with the compression of a gas from 45.3 L to 21.8 L at a constant external pressure of 2.75 atm.arrow_forwardConsider an ideal gas enclosed in a 1.00 L container at an internal pressure of 24.0 atm. Calculate the work, w, if the gas expands against a constant external pressure of 1.00 atm to a final volume of 24.0 L. -23.0 W = Now calculate the work done if this process is carried out in two steps. 1. First, let the gas expand against a constant external pressure of 1.50 atm to a volume of 16.0 L. 2. From the end point of step 1, let the gas expand to 24.0 L against a constant external pressure of 1.00 atm. W = J Jarrow_forward
- A sample of gas in a cylinder is provided with 6.204E2 kJ of heat. This causes a piston to then compress the gas by doing 4.357E2 kJ of work on the gas. What is the change in internal energy of the gas during this compression?arrow_forwardHow much work (energy) is required to lift a 173 g object by a height of 71.0 feet? The earth's gravitational constant is g = 9.80 m/s2.arrow_forwardA piston assembly (system) is warmed by an external flame. The contents of the cylinder expand, pushing the piston outward against the external pressure. If the piston system absorbs 7100J of heat and does 693J of work, what is the value of ΔE?arrow_forward
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