Engineering Board Exam Reviewer · Thermodynamics · medium
What is the pressure of 10 kg of air in a 2 m3 tank at 300 K? (R = 0.287 kJ/kg· K)
- 12471.0 kPa
- 43.0 kPa
- 430.5 kPa
- 861.0 kPa
Answer
C. 430.5 kPa
Solution
P = mRT/V = 10(0.287)(300)/2 = 430.5 kPa.
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