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stiks02 [169]
3 years ago
5

Which of the following reactions does the coenzyme biotin catalyze?

Chemistry
1 answer:
Papessa [141]3 years ago
5 0

Answer:

c. decarboxylation of an a-keto acid.

Explanation:

Decarboxylation refers to the removal of the carboxyl group from a carboxylic acid and thus releasing carbon dioxide. Decarboxylases are enzymes that speed up the removal of the carboxyl group from acids. These reactants could be amino acids, alpha-keto acids, and beta-keto acids. Biotin is known to catalyze the decarboxylation of malonyl CoA to acetyl CoA during fatty acid synthesis.

Malonyl CoA is converted to acetyl CoA after decarboxylation assisted by biotin also known as Vitamin H. Alpha keto acids are involved in fatty acids synthesis and Malonyl CoA is an alpha-keto acid because the keto group is located in the first carbon near the carboxylic acid group. Keto acids have both a carboxyl group and a ketone group.

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Determine the percent water in CuSO4.5 H2O to three significant figures.
RideAnS [48]

Answer:

\%\;of \;water = 36.08\%

Explanation:

Molecular mass of CuSO_4.5H_2O = 249.72\;g/mol

Molecular mass of H_2O = 18.02\;g/mol

In CuSO_4.5H_2O, 1 mole of compound has 5 moles of H_2O.

Mass of 5 moles of H_2O = No.\; of\;mole\;of\;water \times\;molecular\;mass\;of\;water

Mass of 5 moles of H_2O = 5\times 18.02 = 90.10\;g/mol

\%\;of \;water=\frac{Mass\;of\;water}{Tolat\;mass\;of\;CuSO_4}

\%\;of \;water = \frac{90.10}{249.72}\times 100= 36.08\%

7 0
3 years ago
Given the initial rate data for the reaction A + B –––> C, determine the rate expression for the reaction.
umka21 [38]

Answer:

B) Δ[C]/Δt = 3,60x10⁻² M⁻¹s⁻¹ [A] [B]

Explanation:

For the reaction A + B → C

The formula for rate of reaction is:

Δ[C]/Δt = k [A] [B]

As you have [A], [B] and Δ[C]/Δt information you can multiply [A] times [B] and take this value as X and Δ[C]/Δt as Y. The slope of this lineal regression will be k.

Thus, you must obtain:

y = 3,60x10⁻² X

Thus, rate of reaction is:

B) Δ[C]/Δt = 3,60x10⁻² M⁻¹s⁻¹ [A] [B]

I hope it helps!

3 0
2 years ago
Read 2 more answers
Moles /Number of Particles Con
Olin [163]

(2.03x10^22)/(6.02x10^23) = .033721 mol Li

I hope this helps, if not, i am sorry

7 0
2 years ago
N2 + 3 H2 --> 2 NH3
Anna71 [15]

Answer:

4 moles of NH3 will be produced

Explanation:

The reaction expression is given as:

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We have to check that the equation of the reaction is balanced.

 Then;

      if 2 mole of N₂ reacts;

 1 mole of N₂ will react with 3 mole of H₂ to produce 2 mole of NH₃

2 mole of N₂ will react with (2x3)mole of H₂ to produce (2x2)mole of NH₃

                                                    6mole of H₂ to produce      4 mole of NH₃

7 0
2 years ago
A compound x is an important ingredient of an antacid. It is also used in fine extinguishers. Identify x.
Maslowich
NaHCO3 is the required substance often used in antacid and is used in Soda Acid Fire Extinguisher.
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3 years ago
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