# What is the molarity of 8.20 g of {eq}Na_2CO_3 {/eq} dissolved in 350.0 mL of solution?

## Question:

What is the molarity of 8.20 g of {eq}Na_2CO_3 {/eq} dissolved in 350.0 mL of solution?

## Molarity:

The concentration of a solution tells us how much quantity of any solute is present in the solution. In chemistry, it is important to know the accurate concentration of the solution while preparing buffer solutions and reagents. Molarity is one of the ways to express the concentration of the solution. It tells us how many moles of solute are there in one liter of the solution. The unit of molarity is {eq}\rm \left( \dfrac {mol}{L} \right) \ \text{or} \ M {/eq}. The number of moles of solute can be determined by dividing the mass of the solute by its molar mass. The mass of one mole, in grams, is known as molar mass.

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Given:

• Mass of {eq}\ Na_2CO_3, \ m = 8.20 \ \rm g {/eq}
• Volume of the solution, {eq}V = 350.0 \ \rm mL {/eq}

The molar mass of {eq}\ Na_2CO_3...