Question

20 g solute is present in 200 mL solvent. The
density of solvent is 0.9 g/mL. What is the weight
fraction and weight percent of the solute?
(1) 0.1 and 10
(2) 0.2 and 20
(3) 0.3 and 10
(4) 0.2 and 30​

Answer 1

Answer:

0.1 and 20 is the answer

Explanation:

It is 200

Answer 2

The weight fraction and weight percent of the solute is (1)0.1 and 10

*The formula used here is ,

 Weight fraction of solute=$\frac{mass of solute}{mass of solution}$

 Weight percent of solute=$\frac{mass of solute}{mass of solution}*100$

*Mass of solute=20g

  Mass of solvent=200

  Mass of solution=200+20=220

*Weight fraction of solute=$\frac{20}{220}=0.09$≅0.1

*Weight percent of solute=$\frac{20}{220}*100$=10