Define molality of a solution.

Define molarity of a solution.

Define and illustrate equivalent mass of an acid.

Define Molality. $29.25 \mathrm{g}$ of $\mathrm{NaCl}$ is present in $529.25 \mathrm{g}$ of the solution. Find out the molality.

What is the molality of a solution containing $40 \mathrm{g}$ of $\mathrm{NaOH}$ in $1000 \mathrm{mL}$ of water?

Define surface tension.

Define the term viscosity.