Write the molecular formulae for the following compounds

(a) Aluminum (III) nitrate

(b) Calcium (II) phosphate

(c) Mercury (II) chloride

(d) Magnesium (II) acetate

‘Osmosis is a special kind of diffusion’ comment.

Give the chemical formulae for the following compounds and compute the ratio by mass of the combining elements in each one of them.

(a) Ammonia

(b) Carbon monoxide

(c) Hydrogen chloride

(d) Aluminum fluoride

Helium atom has 2 electrons in its valence shell but its valency is not 2, Explain.

If a person takes concentrated solution of salt. After sometime, he starts vomiting. What is the phenomenon responsible for such situation? Explain.