Question

If 2.0 moles of a substance are dissolved in 2.0 liters of solution, then the molarity of this solution is:

0.5 M

1.0 M

1.5 M

2.0 M

Answer 1

1.0 M

Step-by-step 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:

`M=(n_(solute))/(V_(solution))`

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

`M=(2.0 mol)/(2.0 L)=1.0(mol)/(L)=1.0M`

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

Best regards.

Answer 2

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