Homework Help: chemistry

Posted by Anonymous on Wednesday, September 26, 2007 at 10:54pm.

the mass of an individual atom of fluorine is 19 amu. how many atoms would weigh a total of 1.7455x10-3g of this element if the mass of 1 amu is 1.6650x10-24

chemistry - drwls, Wednesday, September 26, 2007 at 10:58pm
Divide 1.7455x10-3 g by the mass of one F atom, which is 19*1.6650x10-24 g
That will give you the number of atoms.
chemistry - Anonymous, Wednesday, September 26, 2007 at 11:02pm
i got 1.812e-25 but it says that not the correct answer
chemistry - Anonymous, Wednesday, September 26, 2007 at 11:09pm
it didnt work
chemistry - DrBob222, Wednesday, September 26, 2007 at 11:15pm
1.7455e-3/(19*1.6650e-24) is not 1.812e-25
chemistry - Anonymous, Wednesday, September 26, 2007 at 11:36pm
ty

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