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
torisob [31]
3 years ago
9

Calculate the freezing point (Kf = 1.86 °C/m) of a 2.1m aqueous solution of KCl.

Chemistry
1 answer:
Wittaler [7]3 years ago
7 0

Answer:

The freezing point of the solution is - 3.90 °C.

Explanation:

  • We can solve this problem using the relation:

<em>ΔTf = (Kf)(m),</em>

where, ΔTf is the depression in the freezing point.

Kf is the molal freezing point depression constant of water = - 1.86 °C/m,

m is the molality of the solution (m = 2.1 m).

<em>∴ ΔTf = (Kf)(m)</em> = (-1.86 °C/m)(2.1 m) =<em> - 3.90 °C.</em>

<em>∵ The freezing point if water is 0.0 °C and it is depressed by - 3.90 °C.</em>

<em>∴ The freezing point of the solution is - 3.90 °C.</em>

You might be interested in
Which change of state involves a release of energy?
Lera25 [3.4K]

Answer:Condensation

Explanation:I just took it:/

5 0
3 years ago
Read 2 more answers
Select the correct answer.
Svetradugi [14.3K]

Answer:

the answer is A

Explanation:

According to the law of conservation of energy or the first law thermodynamics energy neither be created nor destroyed, energy is transferred from one form to another form.

4 0
3 years ago
What is determined by calculating the slope of the position versus time graph distance
Ymorist [56]

Answer:

Determining the Slope on a p-t Graph. It was learned earlier in Lesson 3 that the slope of the line on a position versus time graph is equal to the velocity of the object. ... If the object has a velocity of 0 m/s, then the slope of the line will be 0 m/s. The slope of the line on a position versus time graph tells it all.

Explanation:

#<em>c</em><em>a</em><em>r</em><em>r</em><em>y</em><em>o</em><em>n</em><em>l</em><em>e</em><em>a</em><em>r</em><em>n</em><em>i</em><em>n</em><em>g</em><em> </em>

6 0
2 years ago
Read 2 more answers
What is the composition of stainless steel​
andreev551 [17]
Stainless steel is an alloy of iron, chromium and nickel.
3 0
1 year ago
Read 2 more answers
August kekule described the various ring structures of the carbon compound benzene. What type of chemist would he be considered
Andreyy89
B.  He would be considered an Organic Chemist since Organic Chemistry is the study of Carbon and its compounds.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Label each Formula In the Chemical equation Below As either A reactant or a product
    10·1 answer
  • Why are pennies good for simulating radioactive atoms? Check all that apply. Pennies have two sides—one to represent radioactive
    7·2 answers
  • Which of the following is true about glass recycling?
    12·1 answer
  • A group of students want to see how temperature affects the time spilled water to dry up what will be independent and dependent
    12·1 answer
  • Fifteen points! Nothing like chemistry quizzes in the morning... &gt;o&lt;
    12·1 answer
  • What are 2 reasons molecules cannot pass easily through the cell membrane? What part of the cell membrane helps them get through
    14·1 answer
  • Need help pleas can some body helpe me?​
    6·1 answer
  • A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe
    7·1 answer
  • Describe one action that people can take to reduce the amount of petroleum or crude oil needed by the plastics facility
    9·1 answer
  • Except for speed, your nervous system is most similar to
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!