How many moles of MgCl2, are in 400. L of a 0.021 M solution? A 0.75 mol
B 8.4 mol
C 7.5 mol
D 0.84 mol

The correct answer to the following question will be Option B "8.4 mol".

Explanation:

The given values are:

Molarity of a solution = 0.021 M

Litres of solution = 400 L

Let the moles be "x".

As we know,

⇒  

On putting the estimated values, we get

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On applying cross-multiplication, we get

⇒  

⇒  

lol idk man i guess u gotta ask bill nye the science guy