Answer to Question #75889 in General Chemistry for ayesha

Question

you need to prepare a sample containing 0.2 g of cuso4 from a solution that is 10% cuso4 by mass. what mass of solution do you need?

Answer 1

Solution:
Considering the proportion:
10 g CuSO4 --- in 100 g of the solution (10% by mass)
0.2 g CuSO4 --- in X g of the solution
Therefore:
X = (0.2 ∙ 100) / 10 = 2 g
Answer:
2 g