Question #184bf

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Answer 1 · 2018-01-29T01:47:15

33.3 mL will be needed.

Since the definition of molarity is:

Molarity = $\frac{moles of solute}{litres of solution}$ $("moles of solute")/("litres of solution")$

it follows that

Litres of solution = $\frac{moles of solute}{molarity}$ $("moles of solute")/("molarity")$

Therefore

Litres of solution = $\frac{0.040 mol}{1.20 \frac{mol}{L}} = 0.0333 L$ $(0.040 "mol")/(1.20 "mol"/L)= 0.0333L$

or 33.3 mL