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Inga [223]
3 years ago
8

The KM is:A) equal to the product concentration at initial reaction conditions.B) equal to the substrate concentration when the

reaction rate is half its maximal value.C) proportional to the standard free energy.D) All of the above.E) None of the above.
Chemistry
1 answer:
cestrela7 [59]3 years ago
6 0

Answer:  equal to the substrate concentration when the reaction rate is half its maximal value.

Explanation: the KM is known as The Michaelis constant. The value of the Michaelis constant KM is numerically equal to the substrate concentration at which the reaction rate is half of Vmax.

The KM value for an enzyme depends on the particular substrate and on environmental conditions such as pH, temperature, and ionic strength.

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Rutherford and his colleagues fired a beam of small, positively charged alpha particles at thin gold foil. Some of these alpha p
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C) The atom must contain some centrally located positive charge. He called this core of positive charge the nucleus.

Explanation:

Rutherford concluded from his experiment that the atom contains some centrally located positive charge. He called the core the nucleus.

Rutherford developed the nuclear model of the atom.

  • In a bid to explain his observation, Rutherford suggested the nuclear model.
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7 0
3 years ago
How many moles of oxygen are needed for the complete combustion of 12.6 moles of acetylene?
soldi70 [24.7K]

The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.

The moles of reactant and product in a chemical reaction to the whole number ratio is given by the stoichiometric coefficient of the balanced chemical equation.

8 0
3 years ago
2. If the reaction of 5.75 moles of sodium with excess hydrofluoric acid is able to produce 2.49 mol H2, what is the percent yie
GuDViN [60]

Answer:

86.5%

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

2Na + 2HF –> 2NaF + H2

Next, we shall determine the theoretical yield of the hydrogen gas, H2. This is illustrated:

From the balanced equation above,

2 moles of Na reacted to produce 1 mole of H2.

Therefore, 5.75 moles of Na will react to produce = (5.75 x 1)/2 = 2.88 moles of H2.

Therefore, the theoretical yield of Hydrogen gas, H2 is 2.88 moles.

Finally, we shall determine the percentage yield of Hydrogen gas, H2. This can be obtained as follow:

Actual yield of H2 = 2.49 moes

Theoretical yield of H2 = 2.88 moles

Percentage yield of H2 =.?

Percentage yield = Actual yield /Theoretical yield x 100

Percentage yield = 2.49/2.88 x 100

Percentage yield = 86.5%

Therefore, the percentage yield of Hydrogen gas, H2 is 86.5%.

6 0
3 years ago
What is the approximate bond angle around the central carbon atom in acrolein?
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The approximate bond angle around the central carbon atom in acrolein is 120°

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Atoms with sp2 hybridization have trigonal planar geometry, in this kind of hybridization, bonds are oriented the farthest away possible from each other, to minimize overlapping and the angle that allows that is 120°. 

Have a nice day!

3 0
4 years ago
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