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2 years ago

What is the maximum number of electrons that can be in one orbital

Chemistry

1 answer:

max2010maxim [7]2 years ago

3 0

Answer:

One single orbital can hold the maximum of 2 electrons.

Explanation:

The 2 electrons must have opposing spins otherwise they would have the same four quantum numbers, which is forbidden.

One electron would spin up
The other would spin down

This would tell us that each subshell would have double the electrons per orbital

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How many grams of methionine (MW = 149.21) are needed to make 20 mL of a 150 mM solution?

Leni [432]

Answer:

0.45 g

Explanation:

Step 1: Given data

Molar mass of methionine (M): 149.21 g/mol

Volume of the solution (V): 20 mL

Concentration of the solution (C): 150 mM

Step 2: Calculate the moles of methionine (n)

We will use the following expression.

n = C × V

n = 150 × 10⁻³ mol/L × 20 × 10⁻³ L

n = 3.0 × 10⁻³ mol

Step 3: Calculate the mass of methionine (m)

We will use the following expression.

m = n × M

m = 3.0 × 10⁻³ mol × 149.21 g/mol

m = 0.45 g

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iren2701 [21]

Answer:

Ag+Nano3 yes

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2 years ago

What are the two different ions present in the compound al(no3)3?

Aleks [24]

$Al^{3+}$ and $NO_3^{-}$

Aluminum nitrate is an ionic compound, meaning that it is made up cations and anions. By convention when writing the formula for an ionic compounds the cation part shall be placed in front the anions. Thus the cation would contain aluminum and the anion shall be a polyatomic nitrate ion consisting of nitrogen and oxygen. The bracket with subscript 3 attached resembles the ratio between the two species, aluminum ions and nitrate ions. For each aluminum ion in the compound there shall be three corresponding nitrate ions.

Aluminum form ions of charge +3 whereas nitrate ions are of charge -1. Write the charge of the ion as the superscript in reverse (i.e., write $3+$ as in $Al^{3+}$ and $-$ in $NO_3^{-}$ , omitting any 1.)

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