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3 years ago

How many moles are there in 7.25 x10+22 particles of magnesium

Chemistry

2 answers:

Akimi4 [234]3 years ago

4 0

What do mean by moles?

expeople1 [14]3 years ago

3 0

94.5 magnesium ummmmmmmmmmmmmmmmmmmmmmmm

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The highest energy occupied molecular orbital in the C-C bond of the C2 molecule is?

Butoxors [25]

The highest energy occupied molecular orbital in the C-C bond of the C₂ molecule is 2pπ orbitals.

<h3>What is Molecular Orbital Theory?</h3>

According to this theory,

Molecular orbitals are formed by intermixing of atomic orbitals of two or more atoms having comparable energies
The number of molecular orbitals formed is equal to the number of atomic orbitals combined.
The shape of molecular orbitals formed depends on the type of atomic orbitals combined
Only atomic orbitals having comparable energies and the same orientation can intermix
Bonding M.O. is formed by the additive effect of atomic orbitals and thus, has lower energy and high stability.
Antibonding M.O. is formed by the subtractive effect of atomic orbitals and thus, has higher energy and low stability.
Bonding M.O. is represented by $\sigma, \pi, \delta$ while Antibonding M.O. is represented by $\sigma^*, \pi^*, \delta^*\\$

Molecular Orbital Diagram of C₂

Learn more about Molecular Orbital Theory:

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1 year ago

Balance the chemical equation. Based on the equation, how many grams of chlorine are produced when the sodium chloride decompose

aliina [53]

Answer:

Answer is in the photo

Explanation:

Have a nice day and if the photo isn’t visible let me know! :)

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3 years ago

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How do isobars help meteorologists predict weather?

asambeis [7]

The answer will be (B)

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3 years ago

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Which of these solutions has the highest freezing point?

ANEK [815]

Answer: 1.0 M molecular sucrose (C₁₂H₂₂O₁₁).

Explanation:

1) The depression of the freezing point of a solvent when you add a solute is a colligative property.

2) Colligative properties are those physical properties of solutions that depends on the number of solute particles dissolved into the solution.

3) The relation between the number of solute particles and the depresson of the freezing point is proportional: the greater the number of solute particles the greater the freezing point depression.

4) You need to find the solution with the highest freezing point, this is the solution in which the freezing point decreased the least.

5) Then, that is the solution with least number of solute particles.

6) Since all the given solutions have the same molarity (1.0 M), you only have to deal with the possible ionization of the different solutes.

7) NaCl, CaBr₂, AlBr₃, and KCl are ionic compounds, so each unit of them will ionize into two, three, four, and two ions, respectively, while sucrose, being a covalent compound does not dissociate.

Then, 1.0 M solution of sucrose will have less solute particles than the others, and will exhitibit the lowest freezing point depression, meaning that it will have the highest freezing point of the given solutions.

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2 years ago

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Tatiana [17]

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