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
Dmitriy789 [7]
2 years ago
12

The concentration of cholesterol (C27H46O) in blood is approximately 5.0mM. How many grams of cholesterol are in 315mL of blood

Biology
1 answer:
ASHA 777 [7]2 years ago
8 0

The weight of cholesterol is 0.6 g.

Here use the concept of molarity.

<h3>What is molarity?</h3>

The amount of a substance in a specific volume of solution is known as its molarity (M). The moles of a solute per liter of a solution is known as molarity.

Molarity = no. of moles/volume (in L)

<h3>Calculation:</h3>

Given,

Molarity, M = 5.0 mM = 5 × 10⁻³ M

Volume, V = 315 mL = 315 × 10⁻³ L

To calculate,

Weight of cholesterol =?

We know that,

Molecular mass of cholesterol, C₂₇H₄₆O = 386

No. of moles = weight/ molecular mass

The formula is modified as,

Molarity = weight of cholesterol/ (molecular mass) (Volume)

Put the values in the formula,

5 × 10⁻³ = weight of cholesterol/ (386) (315 × 10⁻³)

Weight of cholesterol = 5 × 10⁻³  (386) (315 × 10⁻³)

                                    = 0.6 g

Hence, the weight of cholesterol is 0.6 g.

Learn more about molarity here:

brainly.com/question/13386686

#SPJ4

You might be interested in
Does inner or outer plants have a rocky composition.
PIT_PIT [208]

Answer:

Do you mean planets?

if so,The heavy rocky particles within the inner part of the disk formed planetesimals and eventually, inner planets. In our solar system, the four innermost planets Mercury, Venus, Earth and Mars are known as inner planets. They lie inside the asteroid belt. They have volcanoes and valleys and are very hot compared to outer planets.Inner planets are much smaller than the outer planets, and are rocky with an iron core.

Hope that helps!

4 0
3 years ago
Which row in the chart could be used to identify the correct BUILDING BLOCKS and PRODUCT in the diagram below ?
iogann1982 [59]

Answer:

Row 2

Explanation:

amino acids link together to make proteins

6 0
3 years ago
Which statement best describes the difference between the sympathetic and parasympathetic nervous systems? A. The sympathetic sy
kvv77 [185]

The correct answer is option B, that is, the sympathetic system prepares the body for stress and activity and the parasympathetic system prepares the body for rest.  

Both the parasympathetic and sympathetic nervous system are the components of the autonomic nervous system that works obligatorily. The sympathetic nervous system holds the key in controlling the body at the time of stress and injury, it is generally regarded as fight or flight. It contracts the muscles of the heart in order to enhance the rate of the heart.  

On the other hand, the parasympathetic nervous system is responsible to monitor the function of the body when it is at rest. It assists in sustaining the homeostasis in the body. It relaxes the muscles of the heart in order to reduce the rate of the heart.  


4 0
3 years ago
Read 2 more answers
If a student notices that frogs are all gathering at one end of the pond the student has done what?
sladkih [1.3K]
Observed I’m pretty sure
4 0
3 years ago
What are all the steps of the water cycle​
Readme [11.4K]

Answer:

Brainliest please!

1. Evaporation -  During this process, surface water turns into water vapor. This is done by the transfer of heat energy. Water absorbs this heat energy and turns into its gaseous state.

2. Condensation -   Water vapor rises into the atmosphere and is changed into water droplets. When gas is chilled, it turns back into a solid state. These water particles that form in the atmosphere then come together to form clouds.

3. Sublimation - Ice directly converts into water vapor without first converting into a liquid. This process accelerates when the temperature is low or pressure is high.

4. Precipitation - It is the result of evaporation and condensation. Precipitation describes any liquid or solid water that falls to Earth as a result of those two processes. It includes rain, hail, snow, sleet and a bunch more.

5. Transpiration - When precipitation happens, the soil absorbs some of the water. While in the soil, the roots of plants will take in the water and push it towards the leaves where it is used for photosynthesis.

6. Run Off -  This happens as a result of precipitation, so it is again, technically not a process. As water pours down, it leads to runoff. This is the action of water running over the surface of the Earth.  As water runs over the ground, it can displace the topsoil with it and move minerals along lakes, seas and oceans.

7. Infiltration - This last process happens when water does none of the things stated above after precipitation. Sometimes, some of the water will move deep into the soil. Avoid the plants, avoid evaporation, avoid runoff, everything. The water instead seeps down and increased the level of the groundwater table. It is called pure water and is 100% fresh and drinkable.

3 0
3 years ago
Other questions:
  • An early consequence of the release of oxygen gas by plant and bacterial photosynthesis was to 17) A) cause iron in ocean water
    5·1 answer
  • How the genotypeRR and Rr result in the same phenotype​
    10·1 answer
  • Which is an adaptation that helped plants survive on land?
    6·1 answer
  • 1. The sensory layer of the eye.
    7·2 answers
  • The chemical synapse is bounded by the ________ neuron, from which neurotransmitters are released across the synaptic cleft, to
    8·1 answer
  • 5. Which level of organization includes the most interactions?
    7·2 answers
  • AQUATICS SCIENCE I need help
    10·1 answer
  • What can DNA fingerprinting be used for
    13·1 answer
  • I don’t know the answer so I need help,yeah,I’m confuse like you
    13·1 answer
  • The formation of the contractile rings during cytokinesis are a function of: select one: a. microtubules b. microfilaments c. in
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!