At $100\,^oC$ and $1\, atm$ pressure,the density of liquid water is $1.0\, g\, cm^{-3}$ and the density of water vapor is $0.0006\, g\, cm^{-3}$. What is the volume occupied by water molecules in $1\, L$ of steam at the same temperature in $cm^3$?

Define surface tension and provide its dimensions and $SI$ unit.

The ratio $C_p/C_v$ for $H_2$ is

The ratio of the rate of diffusion of $SO_2$ and $O_2$ is .......

Fill in the blanks:
$(1)$ The temperature at which gases possess zero volume is called ........... .
$(2)$ In a mixture of gases,the pressure exerted by each individual gas is called .......... .
$(3)$ The pressure exerted by water vapor is known as ..... .
$(4)$ Thermal energy is directly proportional to the ..... of the substance.

What is the absolute or Kelvin temperature scale?