With an increase in temperature,which of the following concentration terms changes?

If $100 \ g$ of a $0.2 \ m$ aqueous solution is diluted by adding $200 \ g$ of water, what will be the molality of the resulting solution?

Which of the following concentration factors is affected by a change in temperature?

What is the meaning of concentration of a solution? Discuss the different ways to express the concentration of solutions.

$A$ sample of drinking water was found to be severely contaminated with chloroform,$CHCl_{3}$,supposed to be carcinogenic in nature. The level of contamination was $15 \ ppm$ (by mass).
$(i)$ Express this in percent by mass.
$(ii)$ Determine the molality of chloroform in the water sample.

What is mole fraction? Explain in brief.