Question

What is the mass of 5.00L of pure water?

Answer 1

use \(1.00[\text L]_{\text H_2\text O}=1[\text {kg}]\)

Answer 2

Density of pure water \[H _{2}O\] is \[10^{3} kg m ^{-3}.\]
Use this and formula density=mass/volume.

Answer 3

I think that if you want to be more delicate, you should mention the temperature.
because the density is temperature dependent.