Dimensions of pressure are same as that of
A mixture of ZnCl2 and PbCl2 can be separated by
One fermi is(a) 10-13 cm (b) 10-15 cm(c) 10-10 cm (d) 10-12 cm
The number of moles of oxygen in 1 L of air containing 21%oxygen by volume, in standard conditions, is
The number of atoms in 4.25 g of NH3 is approximately
