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| Relationship between Gram Molecular Weight and Gram Molecular Volume |
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| Gram molecular weight (GMW) is the relative molecular mass of a substance expressed in grams. It is also called gram molecule of that element. |
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| Gram molecular volume (GMV) or molar volume, is the volume occupied by one gram molecular weight of a gas at STP (Standard temperature and pressure). |
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| All gases of equal volumes contain same number of molecules under the same conditions of temperature and pressure. |
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| Equal number of molecules of different gases will occupy equal volumes under the same conditions of temperature and pressure. |
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| One mole of gas = 6.023 x 1023 molecules |
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| 6.023 x 1023 molecules = 1 mole of a gas |
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