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
vovangra [49]
2 years ago
9

Paradichlorobenzene, c6h4cl2 c 6 h 4 c l 2 , is a component of mothballs. A solution of 2. 00 g g in 22. 5 g g of cyclohexane bo

ils at 82. 39 ∘c ∘ c. The boiling point of pure cyclohexane is 80. 70 ∘c ∘ c. Calculate kb k b for cyclohexane.
SAT
1 answer:
Nimfa-mama [501]2 years ago
3 0

The value of kb of cyclohexane in the given question is; kb = 2.82 °C/m

<h3>Understanding Molality of a Solution</h3>

Molality of solution = (Number of moles of C₆H₄Cl₂)/(Mass of Cyclohexane)

Now;

Number of moles of C₆H₄Cl₂ = Mass/molar mass = 2g/147 g/mol

Number of moles of C₆H₄Cl₂ = 0.0136 mol

Molality of solution = 0.0136/(22.5 * 10⁻³ kg)

Molality of solution = 0.6 m

Now, to find kb for cyclohexane, we will use the formula;

T_b(solution) - T_b(solvent) = kb × molality of solution

Thus;

82.39 - 70 = kb * 0.6

kb = (82.39 - 70)/0.6

kb = 2.82 °C/m

Read more about Molality of Solution at; brainly.com/question/10278982

You might be interested in
To which class class of compounds does amoniabeling to
Advocard [28]
It belongs to the hydrides
8 0
3 years ago
In model 1 a pathogen (virus, bacteria, foreign protein, parasite) has entered the bloodstream of an individual. Draw the symbol
alekssr [168]

There are different kinds of pathogens. The representation of the symbol that stands for the pathogen are;

  • The helper T-cell is represented like a Circle with the Th wrote inside.  

  •  The surface protein on the Th cell is the symbol that looks like this ⊥           or T Th cells.

Pathogens are known to be microorganisms that do invade the bloodstream. It can be easily see among the white cells.

Helper T-cell is known to consist of T-Lymphocytes which monitors the regulation of the immune system. T-cells are regarded as the helper cells that monitors the initial response in front of the pathogen. They includes; TH1, TH2, and TH17.

Learn more about pathogens from

brainly.com/question/8102979

4 0
2 years ago
Ms. Sanchez’s students were asked how many hours they spend participating in organized sports each week. Each row of the table r
slava [35]

The mean of a dataset is the average of the dataset.

The mean of the sample in the third row is 2.2

The dataset is given as:

5 5 3 0 6 2 2 4 5 2 3 4 3 0 1 4 0 4 3 6

From the complete question, the samples in the third row are:

Sample: 3 4 3 0 1

The mean of a dataset is calculated using:

\bar x = \frac{\sum x}{n}

Where:

n = 5 i.e. the number of samples

So, we have:

\bar x = \frac{3 + 4 + 3 + 0 + 1}{5}

Add the expressions in the numerator

\bar x = \frac{11}{5}

Divide 11 by 5

\bar x = 2.2

Hence, the mean of the sample in the third row is 2.2

Read more about mean at:

brainly.com/question/11887128

7 0
2 years ago
Read 2 more answers
Which payment needs to be made to the lender before it closes the file and issued a check for the payment of the house
9966 [12]

Wrong It's Closing Fees

6 0
3 years ago
Read 2 more answers
How is a federal loan different from a private loan for an education?
Pepsi [2]
According to consumerfinance.gov private student loans are not funded or subsided by the federal government private student loans are funded by banks, credit unions, state loan programs, or other types of lenders.
7 0
2 years ago
Read 2 more answers
Other questions:
  • Suppose a friend tells you he has a body temp of 38. Your temp is 37. Do the particles that make up your body or friends body ha
    9·1 answer
  • Select the items that describe labor. not part of the production process earns wages or salaries a human resource and factor of
    10·2 answers
  • What is the Antonym for slit and receded please
    11·1 answer
  •       (d-15)^2
    8·1 answer
  • If an increase in income induces a reduction in quantity demand for rice, rice can be referred to as
    12·1 answer
  • What does it mean if ur crush calls u shawty?
    8·2 answers
  • An outline of your presentation can also be included in the introduction.<br><br> true or fasle
    6·1 answer
  • An amino acid is to a protein as a glucose molecule is to
    14·2 answers
  • Pablo wants to start a savings account and apply for a vehicle loan. He’s not sure which bank he should open the savings account
    14·1 answer
  • Write an expression for the area of the shaded region in its simplest form.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!