Question

What is the molarity of 21.2 grams of sodium carbonate dissolved in 10 litres of solution

Answer 1

Answer:

0.02 M

Explanation:

The molar mass of sodium carbonate is 106g/mol. The number of moles of sodium carbonate is 21.2/106 = 0.2 mol

To find the molarity of the solution, divide the moles of solute by the volume of solution:

0.2/10 = 0.02 M