Question

2) find out the amount of salt required to make
70 ml
water into 40% concentracted
of
solution?​

Answer 1

Answer:

concentration of solution = $\frac{mass of solute}{volume of solution}$

     $\frac{40}{100}$=$\frac{x}{70}$

     $\frac{40}{100}$ * 70 = x

     28 = x

28 g of salt is required