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lord [1]
3 years ago
12

How many carbon atoms are in 4.00g of butane

Chemistry
2 answers:
Dmitrij [34]3 years ago
5 0
1.66x10^23 atoms I hope this helps u
Svetach [21]3 years ago
5 0

Answer: 1.6221*10^23 atoms

Explanation:

Butane = C4H10

Molar mass = 58g/mol

1 mole of butane has 4 carbon atoms.

% of carbon in 1 mole of C4H10 = 4*12/58 =82.8%

Mass of carbon in 4g of butane = 82.8/100 *4 = 3.312g.

3.312g of carbon is equal to how many moles of carbon?

No.of moles = mass/ molar mass

3.312/12 = 0.276 moles.

Using Avogadro's number,

Number of atoms in any substance = Avogadro's constant * no of moles of that substance

(6.02214*10^23) * 0.276 = 1.6221*10^23 atoms.

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Elena L [17]

Answer:

The correct option is: c. phospholipid      

Explanation:

Phospholipids, also known as glycerophospholipids, are the derivatives of fatty acids which is a major structural component of the cell membranes.

Phospholipid is the class of lipids that is composed of a <u>glycerol molecule that forms ester bonds with the two long-chain fatty acids and one phosphate group.</u>

<u>Therefore, Molecule A is a </u><u>phospholipid.</u>

7 0
2 years ago
10. Which of the following mirror is used to form smaller image
vitfil [10]

Answer:

Correct answer is b) convex mirror

Explanation:

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3 0
3 years ago
Which would be a good source to find weather information about your town from last month?
VLD [36.1K]

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a reference book about weather

Explanation:

6 0
3 years ago
Why is oxygen diflouride a gas at room temperature?
atroni [7]

Answer:

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Explanation:

3 0
2 years ago
Please help me with this thank you!
ludmilkaskok [199]

Answer:

1. B

2. C

3. A

4. E

5. D

6. A, B

7. C, E

8. D

5 0
2 years ago
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