Define gram molecular mass of a substance . How much is the gram molecular mass of oxygen
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Gram molecular mass of a substance is the weight of avogadro number (6.023*10²³) of molecules corresponding to that substance. The mass of one molecule of oxygen is 32 amu (atomic mass unit). The gram molecular mass of oxygen is 32 gram (by definition, amu=gram/mole)
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Gram molecular mass refers to the mass of molecule in one mole of molecule of that substance
Oxygen exist as a diatomic molecule (O2). Therefore gram molecular mass of oxygen is 32
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