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musickatia [10]
3 years ago
9

Genetic material (DNA) can be found in:

Chemistry
2 answers:
Elden [556K]3 years ago
7 0
Both plants and animals have cells

Plants and animals cells both have nuclei, and other organelles such as the cell membrane
lukranit [14]3 years ago
5 0

Answer:

Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms. Though heredity had been observed for millennia, Gregor Mendel, a scientist and Augustinian friar working in the 19th century, was the first to study genetics scientifically.

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The electronegativity is 2.1 for H and 3.0 for N. Based on these electronegativities, NH4 would be expected to The electronegati
amid [387]

Answer:

First statement is true:

  • <u><em>NH₄ would be expected to have polar covalent bonds with a partial positive charges on the H atoms.</em></u>

Explanation:

Nitrogen (N) and hydrogen (H) are two nonmetals; thus, it should be a hint to assert that they form a covalent bond.

The difference in <em>electronegativities</em> between<em> N</em> and <em>H </em>is <em>3.0</em> - <em>2.1</em> = 0.9.

That makes that the bonds be <em>polar</em>. Ions are not formed because to transfer the electrons from one atom to the other (to form ionic bonds) requires an electronegativity difference greater than about 1.7.

Since N is more electronegative than H, in the molecule <em>NH₄</em>, each N atom will pull the electron density toward itself acquiring a partial negative charge and leaving H atoms with a partial positive charge.

Thus, each NH bond is<em> polar covalent with a partial positive charge on the H atoms</em> (first statement from the choices).

3 0
3 years ago
Read 2 more answers
PLZ HELP, I WILL MARK THE BRAINLIEST!!!!
Vika [28.1K]

Answer: a. 4

B 2

C 9

Explanation:

4 0
3 years ago
Gold melts at 1064 c. Melting point is a ___.
Tasya [4]

Physical property .      


8 0
3 years ago
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Which answer accurately describes the difference between speed and velocity? Question 8 options: Speed is the result of a change
abruzzese [7]

Your answer would be

Speed requires distance. Velocity requires direction

I hope this helps!

7 0
3 years ago
Calculate the pH of a solution prepared by mixing: (Show your work for these calculations) pk of acetic acid is 4.75 a. two mole
kupik [55]

Answer:

Explanation:

To calculate pH you need to use Henderson-Hasselbalch formula:

pH = pka + log₁₀ \frac{[A^-]}{[HA]}

Where HA is the acid concentration and A⁻ is the conjugate base concentration.

The equilibrium of acetic acid is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺ pka: 4,75

Where <em>CH₃COOH </em>is the acid and <em>CH₃COO⁻ </em>is the conjugate base.

Thus, Henderson-Hasselbalch formula for acetic acid equilibrium is:

pH = 4,75 + log₁₀ \frac{[CH_{3}COO^-]}{[CH_{3}COOH]}

a) The pH is:

pH = 4,75 + log₁₀ \frac{[2 mol]}{[2 mol]}

<em>pH = 4,75</em>

<em></em>

b) The pH is:

pH = 4,75 + log₁₀ \frac{[2 mol]}{[1mol]}

<em>pH = 5,05</em>

<em></em>

I hope it helps!

7 0
4 years ago
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