how many atoms are are present in 18g of water(H2O).
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1 atomic mass is present in 18gm of water
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18 g of water is equivalent to 1 mole Avogadro's law states that 1 mole of any compound contains 6.02 * 10^23 atoms / molecules / ions / particles hence there are 6.02 * 10^23 molecules in 18g of water
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