Engineering, 11.02.2020 23:54 tommyewall34
A chemical engineer claims to have devised a closed device, operating isothermally at 300 K, that could expand 100 mol of methane (assumed to be an ideal gas) from 1.0 to 0.4 MPa, and in the process generate 250 kJ of useful work. Should we believe this claim? Answer the question by calculating the change in entropy of the system, the change in entropy of the surroundings, and the total change in entropy of the universe.
Answers: 1
Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:10
Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.
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Engineering, 04.07.2019 19:10
Agas is compressed from vi 0.3 m, p 1 bar to of v2 0.1 m3, p2--3 bar. pressure and volume are related linearly during the process. for the gas, find the work, in kj.
Answers: 2
Engineering, 04.07.2019 19:20
The quality is zero at a)-the saturated vapour state b)-the saturated liquid state c)-the saturated liquid-vapour mixture state d)-none of the states in the other answers
Answers: 3
A chemical engineer claims to have devised a closed device, operating isothermally at 300 K, that co...
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