Question

#1: The concentration of a solution can be described in several ways. In which of these ways do you calculate the moles of a solute divided by the kilograms of solvent?

A. molality

B. molarity

C. mole fraction

D. mass percent

**my answer: A. molality

is that right? @chmvijay :)

Answer 1

A. molality

Answer 2

#2: Which of the following is the number of moles of a solute that is dissolved in 1 liter of solution?

A. molarity
B. molality
C. mass percent
D. mole fraction

**my answer: A. molarity

is that right?

and yayy for #1!!

Answer 3

A. molarity

Answer 4

#3: You want to determine the concentration of a liquid solute dissolved in a liquid solvent. Which of the following would be the best to use?

A. molarity

B. molality

C. mass/mass percent

D. volume/volume percent

**my answer; D. volume/volume percent

is that correct?

Answer 5

D. volume/volume percent

Answer 6

#4: Which colligative property is employed when salt is put on an icy sidewalk to melt ice?

A. boiling-point elevation

B. freezing-point depression

C. vapor-pressure lowering

**my answer: A. boiling-point elevation

is that right?

Answer 7

freezing-point depression

Answer 8

#5: You have two liquids in solution. The solutions have different boiling points. Which of the following is the best method to separate them?

A. distillation

B. fractionation

C. filtration

D. osmosis

**my answer: A. distillation

is that right?

Answer 9

A. distillation

Answer 10

okay, so #4 is for sure, definitely B? freezing-point depression is the answer to #4? not boiling point?

Answer 11

yaaa LOL:)

Answer 12

why D option is not there in question 4 :)

Answer 13

oh there's only 3 options for that one :)

okay, so B it is!! :D

Answer 14

:)

Answer 15

thanks!!!