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How is mole related to (a) no of atoms or molecules (b) mass of substance |
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Answer» The mass of one mole of any atom/molecule is equal to its atomic molecular mass in grams.The molecular formula of water is H2O The atomic mass of H = 1The atomic mass of O = 16In a sense, the formula means H + H + O So... 1 + 1 + 16 = 18Therefore, the mass of one mole of water = 18 GramsThanks @diti? Avogadro\'s number is a proportion that relates molar mass on an atomic scale to physical mass on a human scale. Avogadro\'s number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1 and is expressed as the symbol NA.Thanks @diti? |
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