ehild Science Advisor Homework Helper Messages 15,536 Reaction score 1,917 Oct 19, 2013 #31 Why do you not use SI units? And you do not need to evaluate n or N. PV=nRT. ΔU=5/2 (nR) ΔT. --> nR=PV/T , ΔU=2.5 PV ΔT/T. P=101.3 kPa=1.013 e5 Pa. V=4.2 e-3 m3. T=293 K, ΔT=32.23 K. The result is in joules.
Why do you not use SI units? And you do not need to evaluate n or N. PV=nRT. ΔU=5/2 (nR) ΔT. --> nR=PV/T , ΔU=2.5 PV ΔT/T. P=101.3 kPa=1.013 e5 Pa. V=4.2 e-3 m3. T=293 K, ΔT=32.23 K. The result is in joules.