> Q. How much heat energy in joules must be supplied to 14 g of nitrogen at room temperature to raise its temperature by $ 40{}^circ C $ at constant pressure? (Mol. wt. of $ {{N}_{2}}=28g,R= $ constant) – LIVE ANSWER TODAY

Q. How much heat energy in joules must be supplied to 14 g of nitrogen at room temperature to raise its temperature by $ 40{}^circ C $ at constant pressure? (Mol. wt. of $ {{N}_{2}}=28g,R= $ constant)

In This post you will get answer of Q.
How much heat energy in joules must be supplied to 14 g of nitrogen at room temperature to raise its temperature by $ 40{}^circ C $ at constant pressure? (Mol. wt. of $ {{N}_{2}}=28g,R= $ constant)

Solution:

Heat supplied at constant pressure $ Q=mu {{C}_{p}}Delta T $ Here, $ Delta T=40{{,}^{o}}C $ $ {{C}_{p}}=frac{7}{2}R $ (for diatomic gases) Number of moles, $ mu =frac{14}{28}=frac{1}{2} $ $ therefore $ $ Q=frac{1}{2}times frac{7}{2}Rtimes 40=70R $

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