তাপীয় সূত্র

In a cylinder, 2.0 moles2.0 \ moles of an ideal monatomic gas initially at 1.0×106 Pa1.0 \times 10^6 \ Pa and 300K300 K expands until its volume doubles. The work done if the expansion is isobaric is

হানি নাটস

Work done in isobaric process=ΔW=PΔV=nRΔT\Delta W=P\Delta V=nR\Delta T

Here, n=no. of moles=2

At constant pressure, volume doubles \Rightarrow temperature doubles ΔT=To=300K\Rightarrow \Delta T=T_o=300K

Thus,ΔW=2×8.3×300 J=4980 J \Delta W=2 \times 8.3\times 300 \ J=4980 \ J

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