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vesna_86 [32]
3 years ago
14

Which of the following cell structures exhibits selective permeability between a cell and its external environment?

Chemistry
1 answer:
hjlf3 years ago
6 0
I think you forgot to tell us 'the following', love.
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How many grams are in 0.90 mol Pd?*
maria [59]

Mass of Pd = 95.78 g which is close the the variant E) 95.89

Explanation:

To calculate the number of moles of palladium (Pd) we use the following formula:

number of moles = mass / atomic weight

mass = number of moles × atomic weight

mass of Pd = 0.90 × 106.42

mass of Pd = 95.78 g

Learn more about problems with number of moles:

brainly.com/question/3262

4 0
4 years ago
What is the oxidation state of sulfur in SO3?
alex41 [277]
The oxidation state of a substance is the electric charge it is exhibiting in a given state. This may be determined by looking at the oxidation states of accompanying atoms as well as the charge on the complete molecule.

In this case:

Molecular charge: 0
Oxidation state of oxygen: -2 (it is a group 6 element)

Thus,

S + 3 * -2 = 0
S = 6

Sulfur is exhibiting an oxidation state of +6.
8 0
3 years ago
Which of the following are isoelectronic?
OleMash [197]

Answer:

The correct answer is option C.

Explanation:

Isoelectronic species are those atoms or ions which same number of electrons.But they differ in physical and chemical properties.

Atomic number of nitrogen atom is 7.

[N]=1s^22s^22p^3

[N]^{3-}=1s^22s^22p^6

Number electron in nitride ions = N^{3-}=10

Atomic number of oxygen atom is 8.

[O]=1s^22s^22p^4

[O]^{2-}=1s^22s^22p^6

Number electron in oxide ions = O^{2-}=10

[Ne]=1s^22s^22p^6

Number of electrons neon = Ne=10

Hence, N^{3-} , O^{2-} \& Ne are isoelectronic.

7 0
4 years ago
What is the molar mass of this hydrate?
Irina18 [472]
Please provide the hydrate
6 0
4 years ago
Hi..evry one how r u allll!!!!!​
solmaris [256]

Answer:

I'm doing fine, thank you. How do you do?

7 0
3 years ago
Read 2 more answers
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