Question

It is desired to prepare a 40% solution of NaCl in water at 300 K. (a) How many kg of anhydrous sodium chloride should be added to 0.05 cubic metres of pure water having a density of 0.998 g/mL at 300 K? (b) If the salt contains 10% water, how many kg of salt is required?

Answer 1

Explanation:

Answer: There can be two possibilities.

True, if the ring's size is little bigger than the metal ball.

False, if the ring is much bigger in circumference than the metal ball.

Explanation:

The Metal ball on heating, will expand is size. If the ring is closely of the same size, then the metal ball won't pass through the ring on heating.