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notsponge [240]
3 years ago
8

Can someone answer 3’for me please?

Chemistry
2 answers:
abruzzese [7]3 years ago
6 0
b is the correct answer
Nimfa-mama [501]3 years ago
5 0
The correct is B, the ball in her hands has potential energy. When it falls, the potential energy changes to kinetic energy.
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Elements in the same period have the same number of valence electrons. True or False
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URGENT PLEASE HELP ILL MARK BRAINLIST Please someone look at the graph and tell me how to fill in the blank like you don't need
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Answer:

Filled below

Explanation:

#v.e means number of valence electrons.

Also, the column total v.e is gotten by adding the v.e of the metal to the v.e of the non metal based on the chemical formula of both of the 2 elements combined.

K: Cl: 5; KCl; 1 + 5 = 6

Be: S: 6; BeS; 2 + 6 = 8

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3 years ago
Enolase, an enzyme that catalyzes the conversion of 2-phosphoglycerate to phosphoenolpyruvate: Group of answer choices demonstra
Tanzania [10]

Answer:

Requires two Mg²⁺ cofactors and as such demonstrates metal-ion catalysis

Explanation:

Electrostatic catalysis or metal ion catalysis is a catalytic mechanism that makes use of metalloenzymes, such as enolase along with a metal ion which is bound tightly, including, Mo⁶⁺, Ni³⁺, Co³⁺, Mn²⁺, Zn²⁺, Cu²⁺, and Fe²⁺, to undertake a catalysis

For maximal activity, enolase requires the presence of 2 equivalent metal ions in each site which is active

Therefore, the correct option is; requires two Mg²⁺ cofactors and as such demonstrates metal-ion catalysis

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