Answer:
10000000 or [tex]10^{7}[/tex] grains of sand
Step-by-step explanation:
The mass of a grain of sand is about [tex]10^{-3}[/tex] gram.
Total weight of the sand in a bag is = 10 kg = 10000 gms
Let there are n grains of sand in the bag weighing 10 kg of sand.
So weight of n grains will be = number of grains × weight of one grain = 10000
[tex]n.(10)^{-3}=10000[/tex]
[tex]n=\frac{10000}{10^{-3}}=10000(10)^{3}[/tex]
n = 10000 × 1000 = 10000000
n = [tex]10^{7}[/tex]
Therefore answer is [tex]10^{7} Or 10000000[/tex] grains of sand
