If the value of Cp for Nitrogen gas is 7JK^-1mol^-1, then what will be the value of Delta H on heating 28g of Nitrogen gas from 0C to 100C at constant pressure ? (I got the answer as 700J, but the answer key shows 1400J)

Question

cuanchi · Answer

I think your answer is correct, you consider 28g Nitrogen = 1 mol of Nitrogen
Since they said nitrogen gas you should consider nitrogen as a molecular N2 and that is 28g/mol.
I dont know how trustworthy it is your answer key

kainui · Answer

Yeah I agree with @Cuanchi, sounds like they made a mistake here.