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10g of argon gas is compressed isotherma...

`10g` of argon gas is compressed isothermally and reversibly at a temperature of `27^(@)C` from `10L` to `5L`. Calculate `q, w, DeltaU`, and `DeltaH` for this process. `R = 2.0 cal K^(-1) "mol"^(-1), log_(10)2 = 0.30`. Atomic weight of `Ar = 40`.

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`q= 2.303 nRT log. (V_(2))/(V_(1)) = 2.303 xx (10)/( 40) xx 300 xx log. (5)/(10)= -103.635 cal`
For isothermal expansion,`DeltaE= 0` `w= DeltaE-q= 0-( - 103.635)= +103.635 cal`
Also, when temperature is constant, `P_(1)V_(1) = P_(2)V_(2)` or `PV =` constant `DeltaH = DeltaE +Delta(PV) = 0+0=0`
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