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vlabodo [156]
3 years ago
10

Somebody please answer

Chemistry
1 answer:
dlinn [17]3 years ago
4 0

Explanation:

Molarity = (# of moles)/(# of liters)

= 180 mol MgCl2/60 L

= 3.0M MgCl2

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2FeCl3 + 3Mg → 3MgCl2 + 2Fe
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Answer:

\large \boxed{\text{A. 3.0 mol}}

Explanation:

We will need a balanced equation with moles, so let's gather all the information in one place.

               2FeCl₃ + 3Mg ⟶ 3MgCl₂ + 2Fe

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2 mol of FeCl₃ react with 3 mol of Mg

\text{Moles of FeCl}_{3}  = \text{4.5 mol Mg}\times \dfrac{\text{2 mol FeCl}_{3}}{\text{3 mol Mg}}= \textbf{3.0 mol Mg}\\\\\text{The reaction will need $\large \boxed{\textbf{3.0 mol of Mg}}$}

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