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29 July, 11:12

If a balloon is heated, what happens to the volume of the air in the balloon if the pressure is constant?

A. It decreases.

B. It increases.

C. It stays the same.

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Answers (1)
  1. 29 July, 12:06
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    B. It increases.

    Explanation:

    We can use the general law of ideal gas: PV = nRT.

    where, P is the pressure of the gas in atm.

    V is the volume of the gas in L.

    n is the no. of moles of the gas in mol.

    R is the general gas constant,

    T is the temperature of the gas in K.

    It is clear that, at constant P, the volume of the gas (V) is directly proportional to the temperature of the gas.

    V ∝ T.

    So, If a balloon is heated, the volume of the air in the balloon if the pressure is constant:

    B. It increases.
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