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lawyer [7]
3 years ago
13

Draw an orbital overlap diagram to represent the bonding in ammonia, NH3.

Chemistry
1 answer:
Svetlanka [38]3 years ago
5 0
NH3 is a molecule with a nitrogen atom in the middle surrounded by 3 hydrogen atoms bonded covalently. Nitrogen has 5 valence electrons so, it will form sigma bonds (sp3 hybrid orbitals) with each of the hydrogen atom. The remaining lone pair electrons will be situated above the atom. You ca look at this image I've pulled from Google.

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How is it possible for a protein to change over 70% of its amino acids and still fold in the same way?
Varvara68 [4.7K]

The complete question is

Comparison of a homeodomain protein from yeast and Drosophila shows that only 17 of its 60 amino acids are identical. How is it possible for a protein to change over 70% of its amino acids and still fold in the same way?

Answer:

Many different strings of the amino acid can give rise to the identical protein folds. The amino acid differences between the Drosophila and homeodomain proteins from yeast are the functional proteins which do not change their structure and function.

There is a several amount of folding required which can cause change in the protein structure.

There is a basic functional proteins common in both the organism which do not change its structure and function.

5 0
3 years ago
What solution usually goes in burette? 1) Acid 2) Base 3) Indicators 4) Water
SIZIF [17.4K]

Answer: the acid

Explanation:

7 0
4 years ago
Calculate the theoretical density (in g/cm3) of copper (Cu), given that it has the FCC structure. The atomic weight of Cu is 63.
sasho [114]

Answer:

8.937g/cm³

Explanation:

To answer this question we need to know that, in 1 unit FCC cell you have:

Edge length = √8 * R

<em>Volume = 8√8 * R³</em>

<em>And there are 4 atoms per unit cell</em>

<em />

<em>Mass of 4 atoms in g:</em>

4 atom * (1mol / 6.022x10²³atom) * (63.55g / mol) = 4.221x10⁻²²g

<em />

<em>Volume in cm³:</em>

0.1278nm * (1x10⁻⁷cm / 1nm) = 1.278x10⁻⁸cm

Volume = 8√8 * (1.278x10⁻⁸cm)³

Volume = 4.723x10⁻²³cm³

And density is:

4.221x10⁻²²g / 4.723x10⁻²³cm³ =

<h3>8.937g/cm³</h3>

6 0
4 years ago
Where is the intersection of the position and time axes located on a position-versus-time graph?
Bad White [126]

it is located at the origin so A

hope this helped ^_^

5 0
3 years ago
Name four acids obtained from plants​
olga55 [171]

Answer:

Formic acid H. COOH

Acetic acid CH3.COOH

Propionic acid CH3 . CH1 . COOH

Butyric acid CH3 . CH1 . CH1 . COOH

Explanation:

4 0
3 years ago
Read 2 more answers
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