# Tag Info

If You know density $rho_r$ at some temperature $T_r$, there is a following formula for density: $rho=rho_r[1+b(T-T_r)]$, where $rho$ is the density at temperature $T$ and $b$ is called coefficient of cubical expansion, evaluated at reference temperature and density ($rho_r$ and $T_r$). It is valid for liquids.