Which type of engineers were the designers of the Great Pyramids of Egypt and the Great Wall of China?
2 answers:
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Answer:
work done = 665.12 kJ/k.mol of nitrogen
dQ = 685.905 kJ/k.mol of nitrogen
Explanation:
given data
pressure = 80 bar
temperature t1 = 220 K
temperature t2 = 300 K
solution
first we get here work done as considering ideal gas condition
work done = P (v2-v1 ) = nR (t2-t1)
put here value
work done = 1 × 8.314 ×( 300 - 220 )
work done = 665.12 kJ/k.mol of nitrogen
and
now we get heat transfer by 1st law of thermodynamics that is
heat transfer dQ = dv + dw
dQ = Cv dT + dw
put here value and we get
dQ = × (t2-t1) + 665.12
dQ = × (300-220) + 665.12
dQ = 685.905 kJ/k.mol of nitrogen