Q. How many molecules are present in 1 ml of water..? explain
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We know that
Density of water = 1ml/1gm
So 1ml = 1gram
∴Given mass = 1gram
Molar mass of water = H2O = 1+1+16 = 18gm
So no.of moles = given mass/ molar mass = 1/18
∴No.of molecules = No.of moles × Avagadro number = 1/18 × 6.022×10²² = 0.3441.....×10²² molecules.
Density of water = 1ml/1gm
So 1ml = 1gram
∴Given mass = 1gram
Molar mass of water = H2O = 1+1+16 = 18gm
So no.of moles = given mass/ molar mass = 1/18
∴No.of molecules = No.of moles × Avagadro number = 1/18 × 6.022×10²² = 0.3441.....×10²² molecules.
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