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A spherical balloon of radius 3 cm cont...

A spherical balloon of radius 3 cm containing helium gas has a pressure of ` 48 xx 10^(-3)` bar . At the same temperature , the pressure , of a spherical balloon of radius 12 cm containing the same amount of gas will be _______ ` xx 10^(-6)` bar

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Knowledge Check

  • A spherical balloon of volume 4.00 xx 10^(3) cm^(3) contains helium at a pressure of 1.20 xx 10^(5) Pa . How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 xx 10^(-22) J ?

    A
    `3.32 mol`
    B
    `2.16 mol`
    C
    `4.12 mol`
    D
    `2.8 mol`

  • A spherical balloon of volume V contains helium at a pressure P. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is vec(K) ?

    A
    `(2PV)/vecKN_(A)`
    B
    `3PV/KN_(A)`
    C
    `5PV/3KN_(A)`
    D
    `3PV/KN_(A)`

  • A balloon contains 2.0 g of hydrogen gas. A second balloon contains 4.0 g of helium gas. Both balloons are at the same temperature and pressure. Pick the false statement from the following list.

    A
    The number of hydrogen molecules is the same as the number of helium atoms in each balloon
    B
    The density of the helium in its balloon is greater than the density of the hydrogen in its balloon
    C
    The volume of each balloon is the same
    D
    The average speed of the molecules/atoms in each balloon is the same

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