Answer : The mass in kilograms of 100 pills is 0.078 kg.
Explanation :
First we have to convert the mass of one pill from 'mg' to 'kg'.
conversion used :
[tex]1mg=10^{-6}kg[/tex]
So, [tex]780mg=\frac{780mg}{1mg}\times 10^{-6}kg=780\times 10^{-6}kg[/tex]
Now we have to calculate the mass for 100 pills.
As, 1 pills has mass = [tex]780\times 10^{-6}kg[/tex]
So, 100 pills has mass = [tex]100\times 780\times 10^{-6}kg[/tex]
= 0.078 kg
Therefore, the mass in kilograms of 100 pills is 0.078 kg.
