InterviewSolution
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InterviewSolution
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An open flask contains air at `27^(@)C` Calculate the temperature at which it should be heated so that (a) `(1)/(3)` rd of air measured at `27^(@)C` escapes out |
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Answer» Correct Answer - `177^(@)C` Let the initial number of moles of `27^(@)C (300 K)` be `n` No. of moles of air left when heated to `TK = n - n/3 = (2n)/(3)` At constant pressure `n_(1)T_(1) = n_(2)T_(2)` or `n xx 300 = (2n)/(3) xx T` or `T = (300 xx 3)/(2) = 450 K = 177^(@)C` |
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