Question

A gas absorb 2000j of heat and expand against an ex

Answer 1

Answer:

124 J

Explanation:

Given: Heat supplied Q=200 J

P

external

=1.5 atm, V

1

=0.5 L; V

2

=1.0 L

Using the relation, △U=Q+W

W=−P

ext

(V

2

−V

1

)=−1.5 atm(1.0−0.5) L; [1 L.atm=101.33 Joule]

W=−1.5×0.5 L.atm=−0.75 L.atm

W=−0.75×101.33 Joule

W=−75.99 Joule

⇒△U=200 J−75.99 J=124.0 J