Question

arry five mark each.
1.
A solution is prepared by dissolving 2 g of substance A in 18 g of water. Calculate the mass
percentage of solute.​

Answer 1

Answer:

Amount of solute=2g

Amount of solvent= 18g

Mass percentage = Mass of solute÷ Mass of solution × 100

mass of solution= 2g+ 18g= 20g

So, 2g÷20g×100 = 10%

so, the mass % of solute= 10%