1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lbvjy [14]
3 years ago
6

What is the boiling point of a solution that contains 3 moles of KBr in 2000 g of water? (Kb = 0.512 C/m)

Chemistry
1 answer:
pochemuha3 years ago
4 0

Answer:

The answer to your question is   Tb = 100.768°C

Explanation:

Data

Tb = ?

moles of KBr = 3

mass of water = 2000 g

Kb = 0.512 C/m

Process

1.- Calculate the molality of the solution

molality = moles of solute/mass of solvent (kg)

-Substitution

molality = 3/2

-Result

molality = 1.5

2.- Calculate ΔT

    ΔTb = Kbm

-Substitution

    ΔTb = (0.512)(1.5)

-Result

    ΔTb = 0.768

3.- Calculate the boiling point, the boiliing point of pure water is 100°C

   ΔTb = Tb - Tb(solvent)

-Solve for Tb

   Tb = Tb(solvent) + ΔTb

-Substitution

   Tb = 100 + 0.768

-Result

  Tb = 100.768°C

You might be interested in
What does 2Cl mean?​
Nina [5.8K]

Answer: I think that you have to find it in your lesson

Explanation:

4 0
2 years ago
Consider the substances hydrogen (H2), fluorine (F2), and hydrogen fluoride (HF). Based on their molecular structures, how does
katovenus [111]

Answer:

The boiling point of HF is <u><em>higher than</em></u> the boiling point of H2, and it is <u><em>higher than</em></u> the boiling point of F2.

Explanation:

In HF, inter- molecule forces will be present between the hydrogen and fluorine atoms. There will be hydrogen bonding present among the hydrogen and fluorine atoms. Hydrogen bonds are strong bonds and hence the boiling point for HF would be high as much energy will be required to break these bonds.

H2 and F2 will only have intra-molecular attractions and there will be no hydrogen bonds present in them. As a result, their boiling point will be lower.

3 0
3 years ago
If an object that stands 3 centimeters high is placed 12 centimeters in front of a plane mirror, how far from the mirror is the
ryzh [129]

Answer:

the mirror is 12 cm away from the image

Explanation:

; the image will be virtual and it will form at 12 cm distance behind the mirror.

7 0
3 years ago
Which is a method that can be used to separate the components of a solution?
sashaice [31]

Answer:

Distillation

Explanation:

i hope this helps

4 0
3 years ago
If 48 g of magnesium reacts with oxygen gas, how many grams of magnesium oxide will be formed according to the following equatio
Aloiza [94]

think it maybe 48 mg0 because there should be 2g magnesium in the word equation

4 0
2 years ago
Read 2 more answers
Other questions:
  • What is the #1 or main component of the earths ancient atmosphere?
    15·1 answer
  • Under certain conditions, the substance hydrobromic acid can be broken down to form hydrogen and bromine.
    7·1 answer
  • Which description below represents a hydrocarbon?
    11·1 answer
  • Find the volume of 56.0 grams of O2 at stp
    8·1 answer
  • As someone falls toward the Earth, what happens to their GPE?
    5·1 answer
  • What is the amount of energy carried by a photon that has a frequency of 3.76 x 1014 Hz?
    7·2 answers
  • In one of his experiments, Lavoisier placed 10.0 grams of mercury (II) oxide into a sealed container and heated it. The mercury
    10·1 answer
  • The molar mass of magnesium (Mg) is 24.30 g/mol. There are 6.02 Times. 1023 atoms in 1 mol.
    8·1 answer
  • Which metal used in hot water systems​
    11·2 answers
  • Moby eats three-sixths of a pizza. Which fraction is equivalent to three-sixths?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!