Question

When is the density of water? How can we measure density?

Answer 1

Density :

• The density of a material is the measure of how densely it is packed together.
• It is expressed as mass per unit volume.

Density representation:

• Density is represented by $\mathrm{\rho }$ .
• Since density, is mass per unit volume, so its formula is:
• $\mathrm{\rho }=\frac{\mathrm{Mass}}{\mathrm{Volume}}$
• Density is generally expressed in grams per cubic centimetre.

Density of water:

• At $25$ degrees Celsius, water has a density of $997\mathrm{kg}{\mathrm{m}}^{-3}.$
• The density of pure water is $1\mathrm{g}{\mathrm{cm}}^{-3}(1000\mathrm{kg}{\mathrm{m}}^{-3})$.