A 500g toothpaste sample has 0.2 g fluoride concentration
Asked by admin @ in Chemistry viewed by 260 People
A500 g toothpaste sample has 0.2g fluoride concentration .What is the concentration of fluorine in terms of ppm level?
Answered by admin @
1ppm can be easily expressed as 1 milligram of substance per Kg of parent substance.
In this case 0.2 g of F in 500g toothpaste
0.4g of F in 1kg toothpaste
400mg of F in 1kg toothpaste
So concentration of F is 400ppm
This is an easy way. Hope it helps!
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