(PLEASE SHOW ALL WORK) You are designing a Carnot engine that has 2 moles of NO2
ID: 1480956 • Letter: #
Question
(PLEASE SHOW ALL WORK)
You are designing a Carnot engine that has 2 moles of NO2 (nitrogen dioxide) as its working substance; the gas may be treated as deal. The gas is to have a maximum temperature of 800 K and a maximum pressure of 5.00 atm. With a heat input o f 400 J per cycle, you want 300 J of useful work. (a). Find the temperature of the cold reservoir. (b) For how many cycles must this engine run to melt completely a 10.0-kg block of ice originally at -10°C using only the heat rejected by the engine? (c)Identify: What concepts are involved in this problem?
Explanation / Answer
a) Let it is given that ,W = 300 J ,QH =400J , TH =800K ,TC =?
W/QH = 1-(TC/TH)
TC = (1-300/400)*800
= 200K
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