The triple point of water is

The saturation vapour pressure of water at $100^{\circ}C$ is ........ $mm$ of mercury.

$A$ scientist proposes a new temperature scale in which the ice point is $25 X$ ($X$ is the new unit of temperature) and the steam point is $305 X$. The specific heat capacity of water in this new scale is (in $J kg^{-1} X^{-1}$):

The temperature of a body on the Kelvin scale is $x \ K$. When the temperature of this body is measured with a Fahrenheit thermometer,it is found to be $x \ ^\circ F$. Then $x = $......

Explain the study of thermal properties of matter by giving definitions of temperature and heat.

At what temperature is the density of water maximum? Provide the value in $^\circ C$, $^\circ F$, and $K$.