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1.	A container filled with 2 kg of O2 is heated at constant pressure from 27°C to 127°C. The heat supplied in this process is:1. 205 kJ2. 100 kJ3. 225 kJ4. 182 kJ
Answer» Correct Answer - Option 4 : 182 kJ Concept: Heat supplied at constant pressure = mCp(T2 - T1) Calculation: Given: m = 2 kg, T1 = 27°C, T2 = 127°C, Cp of oxygen = 0.918 kJ/kg-K (Experimental results) Heat supplied at constant pressure = mCp(T2- T1) = 2× 0.918× (127 - 27) = 183.6 kJ

A container filled with 2 kg of O2 is heated at constant pressure from 27°C to 127°C. The heat supplied in this process is:1. 205 kJ2. 100 kJ3. 225 kJ4. 182 kJ

Answer» Correct Answer - Option 4 : 182 kJ

Concept:

Heat supplied at constant pressure = mCp(T2 - T1)

Calculation:

Given:

m = 2 kg, T1 = 27°C, T2 = 127°C, Cp of oxygen = 0.918 kJ/kg-K (Experimental results)

Heat supplied at constant pressure = mCp(T2- T1)

= 2× 0.918× (127 - 27) = 183.6 kJ

Discussion