3. Water, with an initial internal energy of 15 kJ, is being heated in a closed...
A rigid tank contains 2.0 kg saturated liquid water at 60 C, then 25 kJ of heat was added to it while being stirred with a paddle which resulted in adding 30 kJ of wok, what is the final internal energy (kJ) of the water?
In a closed system, 1055 kJ of heat is lost by the system while the internal energy increases by 210 kJ. How much work is done? O 210 kJ O -845 kJ O 1055 kJ O -1265 kJ
4. Nitrogen (M-28.01 lb/ibmol) fills a closed rigid tank fitted with paddle wheel, initially at 80°F, 20 psia, and a volume of 2 ft3. The gas is stirred by the paddle wheel to a final temperature of 300°F During the process heat transfer from the gas to its surroundings occurs in an amount of 1.6 Btu. Assuming ideal gas behavior, determine the mass of gas and the work done. Kinetic and potential energy effects can be ignored. R 1545.bmol R(20...
Water is being heated in a frictionless piston cylinder device. During the process, 8 Btu of heat is lost to the surroundings, 50,000 lbf-ft of heat is transferred to the container from a burner, and 7 Btu of work is done by the expansion of the vapor. Determine the change in the internal energy for this process.
1. Calculate the change in the internal energy of the following systems and then determine whether the processes are endothermic or exothermic: (a) 45 kJ of heat is transferred from the system to the surroundings. Answer: AE- the process is (b) 605 J of work is performed by the surroundings to the system. Answer: AE (c) When 145 J of work is done by the surroundings to the system, 212 J of heat is transferred from the system to the...
A system is heated (75 kJ of heat is transferred from the surroundings) and expands (100 kJ of work is done). What is the change in internal energy of the system?
Thermodynamics. Show all the steps, calculations and thought process. 4. Water is being heated on a stove-top while contained in a vertical piston-cylinder device. The stove transfers 65 Btu of heat to the water, and a total of 8 Btu of heat is lost out the sides of the piston- cylinder. Within the cylinder evaporation is occurring, and the water vapor expands the volume of the cylinder, pushing the piston upward by applying 5 Btu of work. What is the...
A system absorbs 21.6 kJ of heat while performing 6.9 kJ of work on the surroundings. If the initial internal energy, E, is 61.2 kJ, what is the final value of E? [ NOTE: Remember “∆” = final – initial]
400 J of heat is added to a system. If the change in internal energy of the system was 850 J, how much work was done on by the system? the inside a container absorbs 250 J of hea while 125 J of work is done on it and then does 70 J of its own work, by how much does the internal energy of the gas increase? 7.500 joules of heat is added to a system while it also...
1. Calculate the change in internal energy ΔΕ when 15.6 kJ of heat is added to the system and 1.4 kJ of work is done to the system. 2. How much work can a bicycle pump perform when the the cylinder compresses from 3L to 2.5 L as you apply a pressure of 1.1 atm? J. A hot air baloon expands from 4,00,000L to 4.00,000L by the addion of 130,000000 of eat energy Calculate the change in energy of the...