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4 years ago

Select the correct answer.

Chemistry

1 answer:

ivann1987 [24]4 years ago

7 0

Answer:

Explanation:

The electronic configuration of N (7 electrons): 1s² 2s² 2p³.

The orbital 1s is filled with two electrons and their spinning direction is opposite and also electrons of 2s.

3p contains (3 electrons) should fill the 3 orbitals firstly. Every orbital contains 1 electron and be in the same spin direction.

So, the right choice is c.

A is wrong because 2 electrons of 3p are paired in the first orbital before filling every orbital.

B is wrong because the 2 electrons of 1s and 2s are in the same direction and also 2 electrons of 3p are paired in the first orbital before filling every orbital.

D is also wrong the 2 electrons of 1s and 2s are in the same direction and the electron in the second orbital of 3p are in opposite direction of the other 2 electrons.

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So I am about half way done with this chemistry question. Could someone help me finish it!

klio [65]

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7 0

3 years ago

A mixture of 0.10 mol of NO, 0.050 mol of H2, and 0.10 mol of H2O is placed in a 1.0- L vessel at 300 K . The following equilibr

umka2103 [35]

Answer:

The concentration of N2 at the equilibrium will be 0.019 M

Explanation:

Step 1: Data given

Number of moles of NO = 0.10 mol

Number of moles of H2 = 0.050 mol

Number of moles of H2O = 0.10 mol

Volume = 1.0 L

Temperature = 300K

At equilibrium [NO]=0.062M

Step 2: The balanced equation

2NO(g) + 2H2(g) → N2(g) + 2H2O(g)

Step 3: Calculate the initial concentration

Concentration = Moles / volume

[NO] = 0.10 mol / 1L = 0.10 M

[H2] = 0.050 mol / 1L = 0.050 M

[H2O] = 0.10 mol / 1L = 0.10 M

[N2] = 0 M

Step 4: Calculate the concentration at the equilibrium

[NO] at the equilibrium is 0.062 M

This means there reacted 0.038 mol (0.038M) of NO

For 2 moles NO we need 2 moles of H2 to produce 1 mol N2 and 2 moles of H2O

This means there will also react 0.038 mol of H2

The concentration at the equilibrium is 0.050 - 0.038 = 0.012 M

There will be porduced 0.038 moles of H2O, this means the final concentration pf H2O at the equilibrium is 0.100 + 0.038 = 0.138 M

There will be produced 0.038/2 = 0.019 moles of N2

The concentration of N2 at the equilibrium will be 0.019 M

5 0

4 years ago

What is meant by hydrogen bond

makvit [3.9K]

Answer:

The attraction between two atoms that already participate in other chemical bonds is a hydrogen bond

3 0

3 years ago

Read 2 more answers

classify each of the following as a pure substance or a mixture. if it is a mixture is it homogenous sea water ice cubes lemonda

KATRIN_1 [288]

Pure substance - Ice cubes

Mixture - Homogenous sea water , lemonade

Pure substance are the substance which have constant chemical composition and characteristic.

Mixture is material made up of two or more chemical substance which are not chemical bonded. These materials in mixture are not in definite proportion.

As water ice cubes has only water in it thus it is pure substance.

Homogeneous sea water contains various salts and impurities in it thus it is mixture.

Lemonade contains lemon juice and water in it . Thus, it is mixture.

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4 0

2 years ago

BlackZzzverrR [31]

Answer:

210 grams should be correct

Explanation:

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4 0

3 years ago

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