[yusufali]

Question: You have a 0.500 g sample of a substance with the empirical formula XBr2. When it is reacted with excess silver nitrate, 1.0198 g of insoluble silver bromide is formed according to the reaction below. Which element corresponds to X?(M.M. AgBr = 187.80 g/mol)    XBr2 (s) + 2 AgNO3 (aq) → 2 AgBr (s) + X(NO3)2 (aq)

My Proposed Solution:

(0.5 g)/ (x + 160) = (1.0198/187.8  ) * 2

x = 187.8(0.5)/ ( 2 * 1.0198 ) - 160

x <0 ?
how can that be possible

can some one assist me with this question?

[fledarmus]

Pay attention to your units, including the identities of the compounds. In particular, what would the "units" for the number "2" be? moles of what per mole of what?

[32oz_soda]

X has to be some sort of transitional metal.

The way I figure this is because (NO₃) has a ^-4 charge.

Agreed?

[sjb]

X has to be some sort of transitional metal.

The way I figure this is because (NO₃) has a ^-4 charge.

Agreed?

Does it?