Calculate no. of moles in 1L of water (density of water is 1g/mL) . Also calculate no. of water molecules in 1L of water.
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We know,
No. of moles = mass / molar mass
Mass of water = Density * Volume = 1 kg/L * 1 L = 1000 g
Molar mass of water = 18 g / mol
Hence , No. of moles = 1000/18 = 55.55 mol
No. of molecules = no. of moles * 6.022*10^23 = 55.55*6.022*10^23 = 3.345*10^25 molecules.
No. of moles = mass / molar mass
Mass of water = Density * Volume = 1 kg/L * 1 L = 1000 g
Molar mass of water = 18 g / mol
Hence , No. of moles = 1000/18 = 55.55 mol
No. of molecules = no. of moles * 6.022*10^23 = 55.55*6.022*10^23 = 3.345*10^25 molecules.
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