The molar mass of Z is 20 g. Find the mass of 1 atom of Z.
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Q2
The number of atoms in one mole is 6×1023. Then the number of sodium ions in 19.5 gm of sodium chloride will be? (If one mole of a substance is equal to gram molecular mass of the substance.)
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Q3
Find the number of H atoms in 9.033×1023 molecules of water.
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Q4
Calculate the number of moles of 360 gms of H2O.
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Q5
Find the number of H atoms in 9.033×1023 molecules of water.