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If 150 cc of gas A contains X molecules,...

If 150 cc of gas A contains X molecules, how many molecules of gas B will be present in 75 cc of B? The gases A and B are under the same condition of temperature and pressure.

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The above problem is based on Avogadro.s law, which states that:
.Equal volumes of all gases under similar conditions of temperature and pressure contain the same number of molecules..
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