Homework Help: chemistry

Posted by lyne on Sunday, June 7, 2009 at 1:04am.

how many atoms of tungsten are in 504.56 g of tungsten(IV)acetate.

i attempted this problem but ended up with atoms of tungsten(IV) acetate in tungsten(IV) acetate instead of atoms of just tungsten in tungsten(IV) acetate.

please help
thanks

chemistry - bobpursley, Sunday, June 7, 2009 at 11:23am
WRite the formula:

W(acetate)4
so there are the same number of atoms of tungsten as is molecules of tungsten acetate.
moles=mass/molmass
molecules tungsten acetate=moles*avagnumber
atomstungsten=moles*avanumger
acetateions=moles*4*avanumber.

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