A plant virus is found to consist of uniform cylindrical particle of 150 Angstrom in diameter and 5000 Angstrom long. The specific volume of the virus is 0.75 mL g−1. if the virus is considered to be a single particle, find its molar mass.

Answer key : 7.092×10^7

A sample of ozone gas is found to be 40% dissociated into oxygen. The average molecular mass of sample should be :

The Normality of 4.9% (w/w) H2SO4 solution having density .02 gm/ml is ?

Ans key: (1.02 N )