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2 years ago

Which is the correct Lewis structure for carbononitridic chloride (CNCl)?

Chemistry

2 answers:

polet [3.4K]2 years ago

6 0

The Lewis structure should be this ⇒ Cl-C≡N,
accompanied by 3 lone pairs on the Cl and one lone pair on the N.

inessss [21]2 years ago

6 0

Answer :

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

The given molecule is, $CNCl$

As we know that, carbon has '4' valence electrons, nitrogen has '5' valence electron and chlorine has '7' valence electrons.

Therefore, the total number of valence electrons in $CNCl$ = 4 + 5 + 7 = 16

According to Lewis-dot structure, there are 8 number of bonding electrons and 8 number of non-bonding electrons.

In the given molecule, carbon is the central atom because it is more electropositive element than the nitrogen and chlorine. The carbon bonded with nitrogen by the triple bond because nitrogen ability to form triple bond and carbon bonded with chlorine by single bond.

The Lewis-dot structure of $CNCl$ is shown below.

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How many moles of KCl will be produced from 15.0 g of KClO3?

slega [8]

Answer:

0.12 mol KCl

Explanation:

2 KClO3 (s) 2 KCl (s) + 3 O2 (g)

15 g x mol

x g KCl = 15 g KClO3 x[ (1 mol KClO3)/ (122.5 g KClO3) ] x [(2 mol KCl)/ (2 mol KClO3)]

x g KCl = 0.12 mol KCl

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2 years ago

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Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such

8_murik_8 [283]

Answer:

0.0164 g

Explanation:

Let's consider the reduction of silver (I) to silver that occurs in the cathode during the electroplating.

Ag⁺(aq) + 1 e⁻ → Ag(s)

We can establish the following relations.

1 A = 1 C/s
The charge of 1 mole of electrons is 96,468 C (Faraday's constant)
1 mole of Ag(s) is deposited when 1 mole of electrons circulate.
The molar mass of silver is 107.87 g/mol

The mass of silver deposited when a current of 0.770 A circulates during 19.0 seconds is:

$19.0s \times \frac{0.770c}{s} \times \frac{1mole^{-} }{96,468C} \times \frac{1molAg}{1mole^{-}} \times \frac{107.87g}{1molAg} = 0.0164 g$

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2 years ago

Calculate the freezing point of a 0.08500 m aqueous solution of nano3. the molal freezing-point-depression constant of water is

Citrus2011 [14]

Depression in freezing point (Δ $T_{f}$ ) = $K_{f}$ ×m×i,
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Thus, (Δ $T_{f}$ ) = 1.86 X 0.0085 X 2 = $0.03162^{0}C$

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Here, T = freezing point of solution
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2 years ago

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What features of this model will help Armando answer the question?

Scrat [10]

Answer:

The adjustable legs and the table of sand.

Note:The question is incomplete. The complete question is given below.

Using Models to Answer Questions About Systems

Armando’s class was looking at images of rivers formed by flowing water. Most of the rivers were wide and shallow, but one river was narrow and deep. Armando’s class thinks that this river is narrow and deep because:

the hill that the water flowed down was very steep, or
the sand grains that the water flowed through were very small.

Armando designed the model below to try to answer the question: Why is this river so narrow and deep?

Explanation:

The model designed by Armando will be helpful to answer the question because of the following features it possesses:

1. An adjustable leg- since one of the hypotheses put forward by the class to explain why the river was narrow and deep was that the hill that the water flowed down was very steep, the adjustable legs can be lowered or raised in order to make the slope shallower or steeper so that their hypothesis can be tested.

2. A table of sand- the table of sand serves as the streambed. By adjusting the size of the sand grains to be larger or smaller, the students will be able to to test their second hypothesis that the small size sand grains that the water flowed through was the reason for the river to be narrow and deep.

The results of their experiments will enable them to come to a conclusion.

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lawyer [7]

Answer:

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