Answer to Question #178616 in General Chemistry for Michelle

Question

Calculate the number of grams of water that must be added to 10.0 g of phenol to prepare a 2.00 percent aqueous phenol solution.

Answer 1

$\frac{10×100}{x}$ = 2

$x = 500g$

mass of solution is 500g

mass of water = 500-10 = 490g

490 g of water must be added