Some Basic Conc...

In answering the above questions, which law has been used? [C=12, N=14, O=16]

What is the mass of $$CO_2$$ in grams?

The volume occupied by 53.5 g of $$ Cl_2$$ is :

The gases chlorine, nitrogen, ammonia and sulphur dioxide are collected under the same conditions of temperature and pressure. If 20 litres of nitrogen contains 'x' no. of molecules, state the no. of molecules in 20 litres of ammonia.

A vessel contains N molecules of oxygen at a certain temperature and pressure. How many molecules of sulphur dioxide can the vessel accommodate at the same temperature and pressure.

What is the volume occupied by X molecules of $$N_2$$?

What is the volume occupied by $$3X$$ molecules of $$CO$$?

Sodium chloride ($$NaCl$$) reacts with silver nitrate ($$AgNO_3$$) to produce silver chloride ($$AgCl$$) and sodium nitrate ($$NaNO_3$$). The law which satisfies this equation is ___________________ .

A vessel contains X number of molecules of hydrogen gas at a certain temperature and pressure. Under the same conditions of temperature and pressure, how many molecules of nitrogen gas would be present in the same vessel?

Which of the following is a suitable example for illustrating the law of conservation of mass? (Atomic mass of O = 16 u; H = 1 u)