Answer
a. 2.9x$10^2$ g solution.
b. 3.8x$10^2$ g solution.
c. 96 g solution.
Work Step by Step
Mass percent is the number of grams of solute per 100g of solution.
a. So a solution with a concentration of 4.1% sucrose per 100 g of solution.
Hence 12 g of sucrose present:
(100g solution/4.1 g NaCl)x12g sucrose
= 2.9x$10^2$ g solution.
b. So a solution with a concentration of 3.2% sucrose per 100 g of solution.
Hence 12 g of sucrose present:
(100g solution/3.2 g NaCl)x12g sucrose
= 3.8x$10^2$ g solution.
c. So a solution with a concentration of 12.5% sucrose per 100 g of solution.
Hence 12 g of sucrose present:
(100g solution/12.5 g NaCl)x12g sucrose
= 96 g solution.
