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dolphi86 [110]
3 years ago
15

What rule/principle states that electrons in the same sublevel (p, d, or f) are placed in individual orbitals, before they are p

aired up, to increase atomic stability?
Aufbau principle

Hund’s rule

Pauli exclusion principle
Chemistry
2 answers:
LenKa [72]3 years ago
6 0

Answer:

hunds rule

Explanation:

Radda [10]3 years ago
3 0

Answer:

Hunds Rule

Explanation:

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A certain protein was found to contain 0.292% manganese by mass. Determine the minimum molecular mass of the protein.
Lisa [10]
55u \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 0,292\%\\
x \ \ \ \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 100\%\\\\
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3 years ago
A mixture of 10 moles of A, 5 moles of B and 15 moles of C is placed in a one liter container at a constant temperature. The rea
Cloud [144]

Answer:

Equilibrium constant is 0.0873

Explanation:

For the reaction:

A + B ⇄ C

Equilibrium constant is defined as:

K = [C] / [A] [B]

concentrations in equilibrium of each reactant are:

[A] = 10 - X

[B] = 5 - X

[C] = 15 + X

If concentration in equilibrium of B is 9, X is:

[B] = 5 - X = 9 → <em>X = -4 </em>

Replacing:

[A] = 10 - (-4) = 14

[B] = 5 - (-4) = 9

[C] = 15 + (-4) = 11

K = 11 / (14×9) = 0.0873

Thus, <em>equilibrium constant is 0.0873</em>

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