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what is the meaning of gram formula weight. Gram molecular mass may be reported in grams or grams per mole gmol. Equivalent weight definition is - the mass of a substance especially in grams that combines with or is chemically equivalent to eight grams of oxygen or one gram of hydrogen.
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The same way substances are measured within a laboratory. Amount of a molecular substance whose weight in grams is numerically equal to the molecular weight molecular weight weight of a molecule of a substance expressed in atomic mass units amu. 1 gram molecule of H 2 O 180 g 1 mole of water.
It is the sum of atomic masses of all atoms in a formula regardless of whether or not the compound is molecular.
When calculating molecular weight of a chemical compound it tells us how many grams are in one mole of that substance. One thousandth of a kilogram. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. When calculating molecular weight of a chemical compound it tells us how many grams are in one mole of that substance.
