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Rudiy27
3 years ago
11

Draw the Lewis structure for the trisulfur molecule. Be sure to include all resonance structures that satisfy the octet rule.

Chemistry
1 answer:
lbvjy [14]3 years ago
7 0

Answer:

Explanation:

Definition of Lewis structure is a drawing of a molecule that illustrates the connectivity of the compound, as well as identifying the lone pairs of electrons available for bonding with other molecules. Lines between atoms in a Lewis structure represent covalent bonds and lone pair electrons are drawn as a pair of dots.

Rules for drawing lewis dot structure

1. Count the number of valence electron each atom brings into the molecule Trisulfur  

S3 = 6 valence electron X 3 = 18 valence electron

2. Put the electron pairs about each atom such that there are 8e- around each atom (octet rule)

with exception of H, which is only surrounded by 2e- . Sometimes it’s necessary to form double  

and triple bonds. Only the elements C, N, O,P and S will form double and triple bonds.

3. If there is not enough e-  to follow the octet rule then the least electronegative atom is left  

short of e-

4. If there are too many e-  to follow the octet rule, then the extra 8e- are placed on the central atom.

Definition of resonance: this is a way of describing bonding in certain molecules or ions by the combination of several contributing structures into a resonance hybrid in valence bond theory

Conclusion: The lewis structure is shown in the attached picture below, including the lewis dots and the resonance structure also satisfy the octet rule.

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Julli [10]

Answer:

88.24

Explanation:

find the total mass of the compound using there RAM which has been give then the mass of caborn

4 0
3 years ago
What mass of calcium chloride is needed to prepare 2.657 L of a 1.56 M solution?
inna [77]

Answer:

459.126 grams of calcium chloride is needed to prepare 2.657 L of a 1.56 M solution

Explanation:

Molarity is a measure of the concentration of a solute in a solution that indicates the amount of moles of solute that appear dissolved in one liter of the mixture. In other words, molarity is the number of moles of solute that are dissolved in a given volume.

The Molarity of a solution is determined by the following expression:

Molarity=\frac{number of moles of solute}{volume}

Molarity is expressed in units \frac{moles}{liter}

In this case:

  • Molarity: 1.56 M= 1.56 \frac{moles}{liter}
  • Number of moles of calcium chlorine= ?
  • Volume= 2.657 liters

Replacing:

1.56 M=\frac{Number of moles of calcium chlorine}{2.657 liters}

Solving:

Number of moles of calcium chlorine= 1.56 M* 2.657 liters

Number of moles of calcium chlorine= 4.14 moles

In other side, you know:

  • Ca: 40 g/mole
  • Cl: 35.45 g/mole

Then the molar mass of the calcium chloride CaCl₂ is:

CaCl₂= 40 g/mole + 2* 35.45 g/mole= 110.9 g/mole

Now it is possible to apply the following rule of three: if in 1 mole there is 110.9 g of CaCl₂, in 4.14 moles of the compound how much mass is there?

mass=\frac{4.14 moles*110.9g}{1 mole}

mass= 459.126 g

<u><em>459.126 grams of calcium chloride is needed to prepare 2.657 L of a 1.56 M solution</em></u>

3 0
3 years ago
Enough of a monoprotic weak acid is dissolved in water to produce a 0.0144 0.0144 M solution. The pH of the resulting solution i
alexdok [17]

Answer:

The value of dissociation constant of the monoprotic acid is 1.099\times 10^{-3}.

Explanation:

The pH of the solution = 2.46

pH=-\log[H^+]

2.46=-\log[H^+]

[H^+]=0.003467 M

HA\rightleftharpoons H^++A^-

Initially

0.0144         0      0

At equilibrium

(0.0144-x)       x       x

The expression if an dissociation constant is given by :

K_a=\frac{[A^-][H^+]}{[HA]}

K_a=\frac{x\times x}{(0.0144-x)}

x=[H^+]=0.003467 M

K_a=\frac{0.003467 \times 0.003467 }{(0.0144-0.003467 )}

K_a=1.099\times 10^{-3}

The value of dissociation constant of the monoprotic acid is 1.099\times 10^{-3}.

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3 years ago
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svetlana [45]

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