Answer:
Mass of solution=100g
mass of salt=20g
so; mass of solute=80g
percentage composition =(mass of salt/total
mass) ×100
= \frac{20}{100} \times 100 \\ = 20\%
glad to help you
hope it helps
I'd say b, but i'm not 100 percent sure.<span />
The balanced equation:
Mg+2HCl⇒ MgCl₂+H₂
