The percentage of C, H and N in an organic compound are 40%, 13.3% and 46.7% respectively then empirical formula is

Which has maximum molecules?

Specific volume of cylinfrical virus particle is 6.02 $$ \times $$ 10^$$-$$2 cc/g whose radius and length are 7 $$\mathop A\limits^ \circ $$ and 10 $$\mathop A\limits^ \circ $$ respectively. If _NA = 6.02 $$ \times $$ 10²³, find molecular weight of virus.

Molarity of liquid HCl, if density of solution is 1.17 g/ce is