Ti=273+17=290K
Tf=273+27=300K
From ideal gas equation, PV=nRT⇒n=RTPV
nf−ni=RPV[Tf1−Ti1]=−2.5×1025
JEE Main 2017 — Physics Thermodynamics
The temperature of an open room of volume 30m3 increases from 17∘C to 27∘C due to the sunshine. The atmospheric pressure in the room remains 1×105Pa. If ni and nf are the number of molecules in the room before and after heating, then nf−ni will be:
Held on 2 Apr 2017 · Verified 6 Jul 2026.
−2.5×1025
−1.61×1023
1.38×1023
2.5×1025
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