How many moles of MgBr2 are 75.24g of MgBr2

JohnMerlino asked Dec 23, 2023

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43 votes

JohnMerlino asked Dec 23, 2023

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11 votes

Answer:

0.409 mol

Step-by-step explanation:

The formula to find he number of moles is:

No. of moles =
(mass)/(Mr)

Mr of MgBr₂ = 24.3 + (79.9 × 2) = 184.1

Mass = 75.25g

So, no. of moles =
(75.24)/(184.1)

No. of moles = 0.409 mol [to 3 significant figures]

Weierophinney answered Dec 30, 2023

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