calculate the no. of atoms in 7.2 gram of water
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Molecular mass of H2O = 2*1 + 16
= 2 + 16 = 18 u.
No of moles = Weight of water / Molecular mass
No of moles = 7.2 / 18
= 0.4 moles
No.of atoms = moles * Avogadro number
No.of atoms = 0.4*6.022*10^23 atoms.
= 2 + 16 = 18 u.
No of moles = Weight of water / Molecular mass
No of moles = 7.2 / 18
= 0.4 moles
No.of atoms = moles * Avogadro number
No.of atoms = 0.4*6.022*10^23 atoms.
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