Question

How many moles of solute are present in 1.5 L of 0.20 M Na₂SO4?

O 0 0.3 mol
O 1.5 mol
07.5 mol
O 0.13 mol

Answer 1

0.20M means 0.20 molarity

《molarity =number of moles of solute /volume of solution》

0.20 = number of moles of solute /1.5L

number of moles of solute = 0.20×1.5

number of moles of solute = (0.3 mol)