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
bagirrra123 [75]
3 years ago
8

A solution made by dissolving 33 mg of insulin in 6.5 mL of water has an osmotic pressure of 15.5 mmHg at 25°C. Calculate the mo

lar mass of insulin. (Assume that there is no change in volume when the insulin is added to the water.)
Chemistry
1 answer:
Liula [17]3 years ago
8 0

<u>Answer:</u> The molar mass of the insulin is 6087.2 g/mol

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

\pi=iMRT

Or,

\pi=i\times \frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}\times RT

where,

\pi = osmotic pressure of the solution = 15.5 mmHg

i = Van't hoff factor = 1 (for non-electrolytes)

Mass of solute (insulin) = 33 mg = 0.033 g   (Conversion factor: 1 g = 1000 mg)

Volume of solution = 6.5 mL

R = Gas constant = 62.364\text{ L.mmHg }mol^{-1}K^{-1}

T = temperature of the solution = 25^oC=[273+25]=298K

Putting values in above equation, we get:

15.5mmHg=1\times \frac{0.033\times 1000}{\text{Molar mass of insulin}\times 6.5}\times 62.364\text{ L.mmHg }mol^{-1}K^{-1}\times 298K\\\\\text{molar mass of insulin}=\frac{1\times 0.033\times 1000\times 62.364\times 298}{15.5\times 6.5}=6087.2g/mol

Hence, the molar mass of the insulin is 6087.2 g/mol

You might be interested in
Can energy transfer even if the objects are in the same temprature
Elina [12.6K]

Answer:

Yes

Explanation:

7 0
2 years ago
Which of the following is an oxidation-reduction reaction?
Alina [70]

Answer:

last choice

Explanation:

oxidation and reduction can be defined in terms of adding or removing oxygen to a compound

oxidation is gaining oxygen

reduction is to loss oxygen

5 0
3 years ago
A community consists of all the organisms in an ecosystem that belong to the same species.
choli [55]

Answer:

False

Explanation:

A community consists of all the organisms in an ecosystem that belong to the same species. Population density occurs when two or more organisms seek the same resource at the same time. A carrying capacity is anything that restricts the number of individuals in a population.

3 0
2 years ago
Read 2 more answers
Consider the following reaction:
Sidana [21]
Your limiting is CuCI2 and the excess is KI (from what i’ve heard from my tc to find it just use the moles or look at the grams)Do you want me to do the qn and give u the ans or?

Explanation:You have more grams of KI than CuCI2
irl example : I need 200g of flour to bake 1 muffin and 100g of butter.But I have 300g of butter and only 200g of flour.This means I can only bake up to 1 muffin since I got excess grams of butter.But to use up all my 300g of butter I need 400g more of flour.Making my butter the excess while my flour the limiting since I have less of it and it also determines how much muffin would I get at the end of the bake.

im sorry if that example sounds clowny T-T
6 0
3 years ago
Which of the following will result in a chemical change?
Alinara [238K]
C burning coal in a furnace 
5 0
3 years ago
Read 2 more answers
Other questions:
  • Sediment layers stop lateral spreading when:
    8·1 answer
  • Ight this is for all em boy and girls out there who wanna be in an actual loving relationship. Not for the ones who just wanna g
    5·1 answer
  • What is a chemical substance that cannot be broken down into another chemical substance?
    6·1 answer
  • Is this how you draw a punnet square???
    6·2 answers
  • What environmental condition is most likely to trigger the closing of leaf stoma? Wind, heat, darkness, or lack of moisture
    8·2 answers
  • Describe the R group found within an amino acid
    7·1 answer
  • A sample of gas consists of 4.0 moles, and exists at stp. What is the volume of the gas?
    5·2 answers
  • Laws of conservation of mass/pleases help
    8·1 answer
  • Polymer formed from methylene diphenyl isocyanate
    11·1 answer
  • What are household items that are made up from carbon?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!