Question

Density of water at 22 degree centrigreat room temparature

Answer 1

In general, we say that the density of water is 1000 kg/m^3 (or 1 g/cm^3). But you're right that it does vary a little bit with temperature. It is exactly 1000 kg/m^3 at 4 degrees Celsius. At 20 degrees Celsius it is 998.23 kg/m^3 ( or 0.99823 g/cm^3).

Answer 2

The conversion between the two is 1000 kg/m3 to 1 g/cm3. Water never has an absolute density because its density varies with temperature. Water has its maximum density of 1g/cm3 at 4 degrees Celsius.