Q. How many molecules are present in 1 ml of water..? explain
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The number of molecules in 1 mn of water = 3.3×1022
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Since oxygen has an atomic weight of 16 and hydrogen one of 1, the atomic weight of water is 16+2*1=18. Now. From the way avogadro's number is defined, we know that one mole of water, that is 6.022*10^23 moleculesof water, weigh exactly 18 grams.
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