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140 grams of nitrogen absorbs 60 calories of heat without change in volume. If the temperature increases from 27 o C to 30 o C while doing so then what is the value of molar heat capacity? (A) 2 cal K −1 mol −1 (B) 4 cal K −1 mol −1 (C) 5 cal K −1 mol −1 (D) 20 cal K −1 mol −1



140 grams of nitrogen absorbs 60 calories of heat without change in volume. If the temperature increases from 27oC to 30oC while doing so then what is the value of molar heat capacity? 


        (A)    2 cal K−1 mol−1


        (B)    4 cal K−1 mol−1


        (C)    5 cal K−1 mol−1


        (D)    20 cal K−1 mol−1


Grade:upto college level

1 Answers

Radhika Batra
247 Points
7 years ago

As the gas absorbs heat without change in volume \ W = 0 ( V = 0)

 

        Heat absorbed, q = 60 calories

 

        Since ?E = q + W = 60 + 0 = 60 cal

 

        Cv (heat capacity at constant volume)

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