Question

the mass of a grain of salt is around 0.06 mg. how many grains of salt would be in 100 grams of sand?

Answer 1

1,666,667

Explanation:

1000 milligrams is equal to one gram.

First, convert the mass of the grain of salt in milligrams to grams by dividing the mass in milligrams by 1000:

`\implies (0.06)/(1000)=0.00006\; \rm g`

To calculate how many grains of salt would be in 100 grams of sand, divide 100 g by 0.00006 g:

`\implies (100)/(0.00006)=1,666,666.6666...`

Therefore, there are 1,666,667 grains of salt in 100 grams of sand (to the nearest whole number).