Explanation:
A number can be written in the form of scientific notation as follows :
[tex]N=x\times 10^y[/tex]
x is any real number and y is integer
(a) The distance between Pluto and the Sun is 5,913,000 km.
There are 6 digits after 5. In scientific form is given by :
[tex]N=5.91\times 10^6\ km[/tex]
(b) The density of nitrogen gas is 0.0012506 g/cm³.
There are 2 digits before 1. In scientific notation,
[tex]d=1.25\times 10^{-3}\ g/cm^3[/tex]
