a 500g of tooth paste sample has 0.02g floride consentration .what is the concentration of floride in term of ppm level
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89.3 ppm use in mg and can is use only 53.6 ppm
harshit3555:
why
ya i m solve it
because ppm are show 10ki power 6 concentration
but answer is 40
so i thaught weight / mw× 106
try again....
no bcz mg ki toothpaste m his confirm 19.5 ppm and ca are 36.8 ppm
and baki his fluoride ions
and baki his fluoride ions caf2
caf2
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