What is the density of water at `4^@C`?

What is the density of water at 20^@C in SI units?

What is the density of pure water at 4^(@)C in SI?

The density of water at 4^@C is:

Write the density of water at 4^@C .

The density of water at 25^(@)C is

The density of water at 25^(@)C is

___________ of a substance is defined as the ratio of the density of the substance to the density of water at 4^0 C