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ZnI2, can be prepared by the direct comb...

`ZnI_2`, can be prepared by the direct combination of elements. A chemist determines from the amounts of elements that 0.0654 mol `ZnI_2` can be formed.

Text Solution

Verified by Experts

The molar mass of `ZnI_2` is 319 g/mol. (The formula weight is 319 amu, which is obtained by summing the atomic weight in the formula) Thus
`0.0654 ` mol `ZnI_2 xx (319g ZnI_2)/(1 "mol " ZnI_2)`
`=20.9 "gm " ZnI_2`
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