Question

A grain of salt contains about 1.2 x 10^18 atoms.. An average box of salt from the grocery store contains about 5 x 10^6 grains of salt inside. How many atoms of salt exist in 1 box of salt?

Answer 1

To determine the number of atoms in a box of salt, we have to multiply the number of atoms contained in a grain of salt by the number of grains contained in a box of salt.

We are given that there are

`1.2*10^(18)`

atoms in a grain of salt, and that there are

`5*10^6\text{ }`

grains of salt in a box of salt, therefore, in total there are:

`1.2*10^(18)*5*10^6`

atoms in the box.

Simplifying the above result, we get:

`6*10^(24).`

Answer:

`6*10^(24).`