If radius of a sphere in simple cube is 3 nm, what will be the edge length of an unit cell?
6 x 10-9 m
9 x 10-9 m
3 x 10-9 m
1.5 x 10-9 m
In simple cube a = 2r, r = 3 nm and 1 nm = 1x 10-9 m so edge = 6 x 10-9 m
The solubility product of BaSO4 is 1.5 × 10−9. The precipitation in a 0.01 M Ba2+ ions solution will start on adding H2SO4 of concentration -