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
gladu [14]
2 years ago
10

A solution is made by dissolving 2.5 moles of sodium chloride (NaCl) in 198 grams of water. If the molal boiling point constant

for water (Kb) is 0.51 °C/m, what would be the boiling point of this solution? Show all of the work needed to solve this problem.
Chemistry
1 answer:
GREYUIT [131]2 years ago
8 0
Calculate the mol of NaCl dissolved in 1.0kg water :


198 g / 1000 => 0.198 Kg

molality = moles solute / volume 

molality = 2.5 / 0.198

molality = 12.626 mol/kg

NaCl dissociates to form 2 ions 

increase in boiling point = molality * i * Kb

12.626 * 2 * 0.51  => 12.87 ºC

<span>Water boils at 100.00 degrees Celsius , therefore:
</span>
12.87 + 100.00 => 112.87ºC

You might be interested in
Tema: Métodos de Separação de Misturas – Homogêneas e Heterogêneas;
seraphim [82]

Answer:

fjskeowkcnekvo Dee five votes come vote for dog even r

4 0
2 years ago
How many pili are in a bacterial cell
Snowcat [4.5K]

Answer: Bacterial species where observed Typical number on cell Distribution on cell surface

Escherichia coli (common pili or Type 1 fimbriae) 100-200 uniform

Neisseria gonorrhoeae 100-200 uniform

Streptococcus pyogenes (fimbriae plus the M-protein) ? uniform

Pseudomonas aeruginosa 10-20 polar

Explanation:

Pili are structures that extend from the surface of some bacterial cells.

These are hollow, non-helical, filamentous appendages.

Hope it helps you

7 0
2 years ago
What molecules can produce more energy per gram than sugars and are used for storing energy in animals?
Andrei [34K]
The answer is lipids
3 0
3 years ago
Read 2 more answers
9. The “power plant” of the cell is the
Daniel [21]

Answer:

D. Mitochondria

Explanation:

The mitochondria, labeled the powerhouse of the cell, are the organelle responsible for energy production within the cell

8 0
2 years ago
Read 2 more answers
Which best explains the importance of indicator species?
Contact [7]

Answer:

Explanation:

ndicator species (IS) are animals, plants, or microorganism used to monitor changes in our environment. For example, they can tell us about the impact of pollution on an ecosystem, or how well an impaired environment is being managed or restored.

5 0
2 years ago
Other questions:
  • This form of matter has no definite shape but it has volume.
    12·1 answer
  • How many valence electrons does a neutral atom of silicon have??
    9·1 answer
  • A ___________ is a heterogeneous mixture in which the particles settle to the bottom.
    14·1 answer
  • 20points
    10·2 answers
  • Give the excepted charge of the actions of the following elements:
    10·1 answer
  • Please help me with this basic organic conversion.<br>use the shortest way to do it​
    11·1 answer
  • Rotting food is an example of a chemical reaction. Many foods will not quickly less kept in a refrigerator. From this
    9·1 answer
  • What are the basic forces that drive the water cycle? Explain what they are.
    7·2 answers
  • What makes a glass different from a solid such as quartz? Under what conditions could quartz be converted into glass?
    11·1 answer
  • Balance the following skeleton reactions and identify the oxidizing and reducing agents:(b) Fe(CN)₆³⁻(aq) + Re(s) →\mathrm{Fe}(\
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!