Engineering Board Exam Reviewer · Thermodynamics · medium
Three kilograms of air is heated at constant pressure from 300 K to 400 K. How much heat is added? (cp = 1.0 kJ/kg· K)
- 215.6 kJ
- 100 kJ
- 86.1 kJ
- 300 kJ
Answer
D. 300 kJ
Solution
Q = mcpΔT = 3(1.0)(100) = 300 kJ.
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