Comments on: How many grams of sodium ion Na are in 1.90g toothpaste? http://dentalanalyzer.com/dental-caries/how-many-grams-of-sodium-ion-na-are-in-190g-toothpaste Everything Dental Here.... Thu, 09 Sep 2010 07:49:04 +0000 http://wordpress.org/?v=2.5.1 By: Ron Novik http://dentalanalyzer.com/dental-caries/how-many-grams-of-sodium-ion-na-are-in-190g-toothpaste#comment-1697 Ron Novik Fri, 16 Oct 2009 19:18:59 +0000 http://dentalanalyzer.com/dental-caries/how-many-grams-of-sodium-ion-na-are-in-190g-toothpaste#comment-1697 Hi, Assuming that you mean that there is a 0.24 faction of NaF in the toothpaste (i.e., 24%) then... 1) The weight of NaF in 1.90gr of toothpaste is: 1.9 x 0.24 = 0.456gr 2) To figure out the ratio of Sodium (Na) in NaF we'll use the atomic mass of the two atoms: Mw(Na) / [Mw(Na)+Mw(F)] = 23/[23+19] = 0.548 3) Thus, using the ration of Sodium in Sodium Fluoride and the total grams of Sodium Fluoride in the toothpaste, we calculate that the weight of sodium in 1.9gr of toothpaste is: 0.456gr x 0.548 = 0.250gr = 250mg. Good Luck, Ron Novik.<br><b>References : </b><br> Hi,

Assuming that you mean that there is a 0.24 faction of NaF in the toothpaste (i.e., 24%) then…

1) The weight of NaF in 1.90gr of toothpaste is: 1.9 x 0.24 = 0.456gr

2) To figure out the ratio of Sodium (Na) in NaF we’ll use the atomic mass of the two atoms: Mw(Na) / [Mw(Na)+Mw(F)] = 23/[23+19] = 0.548

3) Thus, using the ration of Sodium in Sodium Fluoride and the total grams of Sodium Fluoride in the toothpaste, we calculate that the weight of sodium in 1.9gr of toothpaste is: 0.456gr x 0.548 = 0.250gr = 250mg.

Good Luck,

Ron Novik.
References :

]]> By: Trevor H http://dentalanalyzer.com/dental-caries/how-many-grams-of-sodium-ion-na-are-in-190g-toothpaste#comment-1695 Trevor H Fri, 16 Oct 2009 19:11:59 +0000 http://dentalanalyzer.com/dental-caries/how-many-grams-of-sodium-ion-na-are-in-190g-toothpaste#comment-1695 I continue to be frustrated by questions that do not contain units. Tootpaste contains 0.24by mass etc etc, 0.24 what? I would willingly answer this question if I knew what the details of the question are. Please submit details properly.<br><b>References : </b><br> I continue to be frustrated by questions that do not contain units. Tootpaste contains 0.24by mass etc etc, 0.24 what?
I would willingly answer this question if I knew what the details of the question are. Please submit details properly.
References :

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