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
AveGali [126]
1 year ago
6

The freezing point of an aqueous 0.050 m cacl2solution is −0.27 °c. what is the van’t hoff factor (i) for cacl2at this concentra

tion? how does it compare to the expected value of i?
Physics
1 answer:
Andru [333]1 year ago
3 0

Then the answer is 2.9

$\begin{aligned} \Delta T_{f} &=i \times m \times k_{f} \\ i &=\frac{\Delta T_{f}}{m \times k_{f}} \end{aligned}$

=\frac{0.27^{\circ} \AC}{0.050 \times  \frac{1.86^{\circ} \mathrm{C}}{\mathrm{m}}}

\therefore i^{2}=2.9

Using van’t hoff factor the answer has no unit, as, expected since i is a ratio. The magnitude is about right since it is close to the value ace would expect upon the complete dissociation $\mathrm{CaCl}_{2}$.

What is Van't Hoff factor?

  • The Van't Hoff factor is always positive and can never be negative. When the solute remains completely undissociated in solution, the Van't Hoff factor is one; it is greater than one for salts and acids and less than one for the solute that associates when dissolved to form a solution.
  • The van't Hoff factor is defined as the ratio of the observed colligative property produced by a given concentration of electrolyte solution to the observed colligative property produced by the same concentration of non-electrolyte solution.

To learn more about van't Hoff factor visit: brainly.com/question/24598605

#SPJ4

You might be interested in
Describe an experiment that can be used to determine the resistance of a metallic conductor
raketka [301]

Answer:

resistance of the metal conductor at different temperature

Explanation:

7 0
2 years ago
In the space below, explain why you agree or disagree with the first statement: Each person in a family has the same traits. The
bekas [8.4K]

Answer:

I disagree.

Explanation:

Yes, traits may be similar, but it all depends on the dominant and recessive alleles that are passed on.  No one person can look alike.  Even with twins, a widow's peak or close lobes can be different.

I hope this was the brainliest answer! Thank you for letting me help you.

5 0
3 years ago
You could use newton’s second law to calculate the force applied to an object if you knew the objects mass and its _____.
olga2289 [7]

Answer:

You could use newton’s second law to calculate the force applied to an object if you knew the objects mass and its <u>acceleration.</u>

Explanation:

By, Newtons second law, the force applied on an object directly varies with the acceleration caused and the mass of the object.

This is given by :

F=m\ a

Where F represents force applied on the object , m represents mass of the object and a represents the acceleration.

In order to calculate force applied on object we require the mass of the object and its acceleration. The force can be calculated by finding the product of mass and acceleration of the object.

4 0
3 years ago
If a person runs 720m/minute for 15 minutes, how far will the person run?
julsineya [31]

Answer:

10800

Explanation:

if someone runs 720 miles every minutes they will run 10,800 miles in 15 minutes

3 0
2 years ago
Crest : trough :: compression : _____ A. frequency B. amplitude C. rarefaction D. wavelength
9966 [12]
Rarefraction.

Crest- tallest spot on transverse wave.

Trough- shortest point on transverse wave.

Compression - spot on a compressional wave where the waves are closer together.

Rarefraction - spot on a compressional wave where the waves are farther apart.
3 0
3 years ago
Other questions:
  • A leaky faucet drips 40 times in 30.0 s. what is the frequency of the dripping?
    13·1 answer
  • You are performing an experiment that requires the highest possible energy density in the interior of a very long solenoid. Whic
    7·1 answer
  • A car traveling at 7.0 m/s accelerates uniformly at 2.5 m/s2 to reach a speed of 12.0 m/s. how long does it take this accelerati
    14·1 answer
  • ________ is characterized by the separation of light- and dark-colored minerals into thin layers or bands.
    8·1 answer
  • iron β is a solid phase of iron still unknown to science. The only difference between it and ordinary iron is that Iron β forms
    8·1 answer
  • What is energy state
    11·1 answer
  • Which of these is a landform created due to erosion by glaciers? Delta Horn Sandbars Spit
    13·1 answer
  • A baseball is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stop watch measures the stone's ti
    10·1 answer
  • Complete the ray diagram and label incident ray, refracted ray, angle of incidence, and angle of refraction ​
    15·1 answer
  • How can you make the work output of machine greater than the work input
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!