Question

i) You are provided with a mixture containing sand, iron filings, ammonium
chloride and sodium chloride. Describe the procedures you would use to
separate these constituents from the mixture?
ii) a) Name the technique used for the separation of those solutes that
dissolve in the same solvent.
b) Explain the technique used
c) Give any two applications of this technique.​

Answer 1

ques 1= Step-1: Separate iron filings with the help of a magnet.

Step-2: Sublimation of the remaining mixture separates ammonium chloride when solid directly converts to gaseous vapors.

Step-3: Add water to the remaining mixture, stir and filter out sand by filtration.

Step-4: The filtrate can be evaporated to get back sodium chloride.ope I help you❤❤....

Answer 2

The weight of the man on earth is 150 N and on certain planet is 25 N. So, mass of man on earth= 15010=15kg 150 10 = 15 k g