calculate number of molecules in 1.8 G of water
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The gram molecular mass of H2O = 18 g
According to Avogadro's law
18g of H2O consists 6.02*10^23
Therefore 1.8 g consists = 6.02*10^23 * 1.8 / 18 = 6.02 * 10^22 molecules
Thus 1.8g consists 6.02 * 10^22 molecules.
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the gram molecular mass of the H2O is 18 gram
according to avogadro's law
18 g of H2O consists 6.02*10^23
therefore 1.8f consists 6.02 *10^23*1.8/18=6.02*10^22
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