Subject :NSO Class : Class 9
If 3.01 × 1020 molecules are removed from 98 mg of
H2SO4, then number of moles of H2SO4 left are
(Given : Atomic mass of H = 1 u, O = 16 u, S = 32 u)
A 0.5 × 10-3 mol
B 0.1 × 10-3 mol
C 9.95 × 10-2 mol
D 1.66 × 10-3 mol.
How to solve this