explain with examples what is meant by a mole of a substance
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Mole=given weight of substance in gm /atomic mass
ex: 2 g H2O
molecular mass=18
given weight =2
mole = 2/18
= 1/9
= 0.1 mol
ex: 2 g H2O
molecular mass=18
given weight =2
mole = 2/18
= 1/9
= 0.1 mol
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