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3 years ago

Which of the following equations represent

Chemistry

1 answer:

Harrizon [31]3 years ago

5 0

Answer:

a. MgO(s) + H2CO3(aq) → MgCO3(s) + H2O(l) DOUBLE DISPLACEMENT REACTION.

b. 2KNO3(s)→2KNO2 (s) + O2(8) DESCOMPOSITION REACTION.

c. H2(g) + CuO(s) → Cu(s) + H2O(1) SINGLE DISPLACEMENT REACTION.

d. NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(1) COMBUSTION REACTION.

e. H2(8) + Cl2(g) → 2HCl(8) SYNTHESIS REACTION.

f. SO3(g) + H2O(1)→ H2SO4(aq) SYNTHESIS REACTION.

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Specify which atoms, if any, bear a formal charge in the Lewis structure given and the net charge for the species. Be sure to an

Viefleur [7K]

This is an incomplete question, here is a complete question.

Specify which atoms, if any, bear a formal charge in the Lewis structure given and the net charge for the species. Be sure to answer all parts.

$:C\equiv N:$

a. Formal charge C:___________.

b. Formal charge N:________.

d. Net charge:________.

Answer :

a. Formal charge C : (-1) charge

b. Formal charge N : (0) charge

d. Net charge : (-1) charge

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, $CN^-$

As we know that carbon has '4' valence electrons and nitrogen has '5' valence electrons.

Therefore, the total number of valence electrons in $CN^-$ = 4 + 5 + 1 = 10

According to Lewis-dot structure, there are 6 number of bonding electrons and 4 number of non-bonding electrons.

Now we have to determine the formal charge for each atom.

Formula for formal charge :

$\text{Formal charge on C}=4-2-\frac{6}{2}=-1$

$\text{Formal charge on N}=5-2-\frac{6}{2}=0$

Thus, the net charge will be = -1 + 0 = -1

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2 years ago

What is needed in order to determine a mole ratio?

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all you need to do is look at the balanced equation for the coefficients in front of the substances you are interested in

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A change that produces a new substance is a _______ change

Arturiano [62]

Answer is chemical change

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Barium bromide dissolves in water. Which statement is true?

docker41 [41]

It might be c I think

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2 years ago

As electrons fall from high energy orbitals to lower orbitals, energy is released in the form of electromagnetic radiation. The

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The electronic transition that will produce the lowest frequency is an electron falling from the 3rd to the 2nd energy level.

The question is incomplete, the complete question is;

As electrons fall from high energy orbitals to lower orbitals, energy is released in the form of electromagnetic radiation. The farther the electron falls, the more energy is released. Which of the following electronic transitions would produce a wave with the lowest frequency?

an electron falling from the 6th to the 2nd energy level

an electron falling from the 5th to the 2nd energy level

an electron falling from the 3rd to the 2nd energy level

an electron jumping from the 1st to the 2nd energy level

According to Bohr's theory, energy is absorbed or emitted when an electron moves from one energy level to another. This energy often occurs as visible light of known frequency and wavelength.

The magnitude of frequency of light depends on the difference in energy between the two energy levels. If the difference between the energy levels is high, the frequency of light is also high and vice versa.

The transition from 3rd to the 2nd energy level represents a low frequency transition because the energy levels are close together.

Learn more: brainly.com/question/10675485

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2 years ago