Question

find the number of calium and bromide ions in 2 moles of CaBr2​

Answer 1

Ca = 2+ and

Br = 1 -

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Answer 2

Hi, please consider the answer given below

In the detrmination of the number of bromide ions in 0.2 mole of MgBr2

We use the avogadros number 6.02 x 10^23

Number of molecules of bromide ions= No. of moles x Avogadros number

Number of molecules of bromide ions= 0.2 x (6.02 x 10^23)

= this gives 1.2 x 10^23 bromide ions