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olga nikolaevna [1]
3 years ago
7

What is a community?How is it different from a population?​

Biology
1 answer:
Amiraneli [1.4K]3 years ago
3 0

Answer:

community is a rural area where more than two specie's living together

Explanation:

while population is the total number of specie's

from the above answers you can see how community and population are different

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What is an example of a prokaryote cell?
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Why do we need energy?
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The concentration of cholesterol (C27H46O) in blood is approximately 5.0mM. How many grams of cholesterol are in 315mL of blood
ASHA 777 [7]

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

8 0
1 year ago
Please answer this for me
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Explanation:

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