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An open bulb containing air at 19^(@)C w...

An open bulb containing air at `19^(@)C` was cooled to a certain temperature at which the no. of moles of gaseous molecules increased by 25% What is the final temperature?

Text Solution

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`-39.4^(@)C`
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Knowledge Check

  • By what factor does the average velocity of a gaseous molecule increase when the absolute temperature is doubled ?

    A
    1.4
    B
    `2.0`
    C
    `2.8`
    D
    `4.0`

  • 1600 is first decreased by 25% and then it is increased by 25% . What is the final value?

    A
    1600
    B
    1450
    C
    1500
    D
    1550

  • An open flask contains air at 27^(@)C , calculate the temperature to which it should be heated such that one third of air measured at final temperature escapes out.

    A
    `81^(@)C`
    B
    `127^@ C `
    C
    `177^@ C `
    D
    `227^(@) C`

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