Lime is made commercially by decomposition of limestonese, `CaCO_(3)`. What is the change in intremal energy when `1.00` mole of soild `CaCO_(3)` (V= 34. 2 ml) absobs `177.9 kJ` of heat and decomposese at `25^(@)` C agnist a pressure of `1.0` atm to give solid CaO. ( Volume = 16.9 ml) and `CO_(2)` (g) (V=24.4 L).

Lime is made commercially by decomposition of limestonese, `CaCO_(3)`.

1.	Lime is made commercially by decomposition of limestonese, `CaCO_(3)`. What is the change in intremal energy when `1.00` mole of soild `CaCO_(3)` (V= 34. 2 ml) absobs `177.9 kJ` of heat and decomposese at `25^(@)` C agnist a pressure of `1.0` atm to give solid CaO. ( Volume = 16.9 ml) and `CO_(2)` (g) (V=24.4 L).
Answer» Correct Answer - `q = 177.9 kJ, w = - 2.5 kJ; DeltaE = 175.4 kJ` `q = 177.9 kJ` `w =- P_("ext") (V_(2)- V_(1)) =- (24.4 -(34.2 + 16.9 ) xx 10^(-3))atmL ` ` = - 2.5 kJ " "("1 atm = 101.3 J")` `DeltaE = 177.9 - 2.5 = 175.4 KJ`

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