Question

How many bromide ions are there in 1.5 moles of MgBr2??

a. 2.8*10^2

b. 7.5*10^1

c. 2.6*10^2

d. 2.1*10^24

e. 1.7x10^23

Answer 1

There are 1.8066 x 10^24 bromide ions in 1.5 moles of MgBr2.

Step-by-step explanation:

To find the number of bromide ions in 1.5 moles of MgBr2, we need to consider the formula of MgBr2. In MgBr2, there are two bromide ions for every one Mg2+ ion. So, for each mole of MgBr2, there are two moles of bromide ions.

Therefore, in 1.5 moles of MgBr2, there would be 1.5 x 2 = 3 moles of bromide ions.

Since each mole contains 6.022 x 1023 particles, the number of bromide ions in 1.5 moles of MgBr2 would be 3 x 6.022 x 1023 = 1.8066 x 1024