To aid in the prevention of tooth decay, it is recommended that drinking water contain 1.20 ppm fluoride (F–).?
(a) How many grams of F– must be added to a cylindrical water reservoir having a diameter of 9.61 × 102 m and a depth of 21.68 m?
(b) How many grams of sodium fluoride, NaF, contain this much fluoride?
Can someone please solve this for me? And if you can, can you please show all your steps so I can finally figure it out? Ive been trying to figure out this problem for a couple of days already.
Update:Nemeth your answer is incorrect.
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Find the volume of resevoir.
725610.45*21.68=15731234.55m3
=1.57312345*10^10dm3
Now multiply by grams of F- should be in dm3.
=1.57312345*10^7g
Now find the g of NaF.45.238% of NaF is F- by weight.So 3.4778*10^7g of NaF is enough.