Calculate the molarity of pure water (d=1 g/mL).

Explanation

Density of water `=1g mL^(-1)`
Mass of 1000 mL of water = Volume x Density
`=1000 xx 1=1000 g`
Moles of water `=1000/18 = 55.5`
Now, 55.55 moles of `H_(2)O` are present in 1000 ml or 1 L of water.
`therefore` Molarity = 55.55 M.