Question

How many grams of na2co3 should be dissolved to maake 100cc of .15M na2co3 ?

Answer 1

Molarity = given mass / molar mass

0.15 = x / 106g * 100/1000

x = 10.6 * 0.15

x = 1.59 g

Therefore, amount of Na2CO3 needed = 1.59 g