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The number of Br^- Ions in 2.1 g CaBr2 i...

The number of `Br^-` Ions in 2.1 g `CaBr_2` is [`N_A=6xx10^23`]

A

`1.26xx10^22`

B

`6.3xx10^21`

C

`1.05xx10^21`

D

`1.2xx10^20`

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