Question

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

Answer 1

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.