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Shtirlitz [24]
3 years ago
9

Fatty acids that have multiple double bonds are ?

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
7 0
Polyunsaturated is your 15 letter word
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28 Which of the following compounds contains a transition metal? A. magnesium bromide (MgBr2) B. sodium chloride (NaCl) C. potas
kari74 [83]
D iron oxide Fe is a transition metal
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3 0
3 years ago
Write the complete chemical formula for the unknown compound.
Zinaida [17]

The complete chemical formula for the unknown compound will be  C_2H_6

<h3>Chemical formula</h3>

The chemical formula of the compound is  C_2H_x and x is supposed to be a whole number.

In the analysis, C = 2.22 moles and H = 6.7 moles

Dividing both by the smallest: C = 1 and H = 3

Thus, the empirical formula of the compound will be CH_3

But since the compound is  C_2H_x, it means both C and H are multiplied by 2.

The chemical formula will, therefore, be C_2H_6

More on chemical formulas can be found here: brainly.com/question/11995171

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5 0
2 years ago
During photosynthesis, sunlight shining on a plant is absorbed. Through several chemical reactions, the plant produces sugar, a
konstantin123 [22]
The answer is:
B.electromagnetic energy to chemical energy
Electromagnetic u.v rays from the sun act on chemical substances in the plant chloroplasts producing chemical energy stored and used by the plant.
8 0
3 years ago
Read 2 more answers
A chemistry student is given 600. mL of a clear aqueous solution at 37.° C. He is told an unknown amount of a certain compound X
barxatty [35]

Answer:

  • <u>Yes, it is 14. g of compound X in 100 ml of solution.</u>

Explanation:

The relevant fact here is:

  • the whole amount of solute disolved at 21°C is the same amount of precipitate after washing and drying the remaining liquid solution: the amount of solute before cooling the solution to 21°C is not needed, since it is soluble at 37°C but not soluble at 21°C.

That means that the precipitate that was thrown away, before evaporating the remaining liquid solution under vacuum, does not count; you must only use the amount of solute that was dissolved after cooling the solution to 21°C.

Then, the amount of solute dissolved in the 600 ml solution at 21°C is the weighed precipitate: 0.084 kg = 84 g.

With that, the solubility can be calculated from the followiing proportion:

  • 84. g solute / 600 ml solution = y / 100 ml solution

      ⇒ y = 84. g solute × 100 ml solution / 600 ml solution = 14. g.

The correct number of significant figures is 2, since the mass 0.084 kg contains two significant figures.

<u>The answer is 14. g of solute per 100 ml of solution.</u>

7 0
3 years ago
Classify each amino acid according to whether its side chain is predominantly protonated or deprotonated at a pHpH of 7.40.7.40.
Zepler [3.9K]

Answer: His and Lys are deprotonated but Asp will be protonated.

Explanation:

As the pH is given as 7.4 and pK of His is given as 6.00. There will occur a positive charge on His when it's pH < pK therefore, it is neutral at the given pH.

As the pK value of Lys is 10.53 that is greater than the pH of 7.40. Therefore, charge on Lys is positive.

As the pK value of Asp is 3.65 which is less than the pH value of 7.40. Hence, Asp has a negative charge.

Therefore, we can conclude that His and Lys are deprotonated but Asp will be protonated.

3 0
4 years ago
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