Question

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Answer 1

Answer:

c) 215.3 J

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Answer 2

Q]______?

=> 124 J !

E X P L A N A T I O N

Molar Specific heat of a substance is defined as the amount of heat required to raise the temperature of one gram mole of the substance through a unit degree

As ( dQ )p = μCpdT _[i] ...[ At constant pressure ]

and ( dQ )v = μCvdT _[ii] ...[ At constant volume ]

Given,

( dQ )p = 207 J,,R = 8.3 J/mol-K

dT = 10 K

Putting value in Eq [i], we get

207 = 1 × Cp × 10

∴ Cp = 20.7 J/kg

Cp - Cv = R = 8.3

Cv = 20.7 - 8.3 = 12.4 J

( dQ )v = 1 × 12.4 × 10

( dQ )v = 124 J

∴ The Heat required is 124 J !