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There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows: 

Molarity = 2.0 moles / 2.0 L

Molarity = 1.0 M
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Answer:

1.0 M

Explanation:

Hello,

Molarity is a unit of concentration accounting for the amount of the moles of a solute per liter of solution as shown below:

[tex]M=\frac{n_{solute}}{V_{solution}}[/tex]

In such a way, given the information on the statement, the resulting molarity turns out into:

[tex]M=\frac{2.0 mol}{2.0 L}=1.0\frac{mol}{L}=1.0M[/tex]

Do not forget that mol per liters means molar units (M) as well.

Best regards.

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