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topjm [15]
2 years ago
6

Draw the structural formula of (3e,5e)-2,5-dibromo-3,5-octadiene.

Chemistry
1 answer:
mrs_skeptik [129]2 years ago
4 0

We need draw the structure of (3E,5E)-2,5-dibromo-3,5-octadiene.

The structure is shown below:

The molecule has two double bonds in 3 and 5 position and two Br-atoms attached to 2 and 5 position.

The configuration is 3E and 5E. E configuration indicates cis- isomers where similar groups are in same side with respect to double bonds.

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For the reaction: MgF2(s) ⇌ Mg2+(aq) + 2F- (aq), Ksp= 6.4 × 10-9, the addition of 0.10 M NaF to the solution cause what effect o
galina1969 [7]

Answer:

Shifts the equilibrium to the left. reduces solubility.

Explanation:

  • MgF2(s) ↔ Mg2+(aq) + 2F-(aq)

          S                   S              2S

∴ Ksp = 6.4 E-9 = [ Mg2+ ] * [ F- ]² = S * (2S)²

⇒ 4S² * S = 6.4 E-9

⇒ 4S³ = 6.4 E-9

⇒ S³ = 1.6 E-9

⇒ S = 1.1696 E-3 M

  • NaF(s) → Na+(aq)  +  F-(aq)

        0.10M     0.10M        0.10M

  • MgF2(s) ↔ Mg2+(aq)  + 2F-(aq)

          S'                 S'              2S' + 0.10

⇒ Ksp = 6.4 E-9 = (S')*(2S' + 0.10)²

If we compare the concentration (0.10 M) of the ion with Ksp ( 6.4 E-9 ); thne we can neglect S' as adding:

⇒ 6.4 E-9 = (S')*(0.10)² = 0.01S'

⇒ S' = 6.4 E-7 M

∴ % S' = ( 6.4 E-7 / 0.1 )*100 = 6.4 E-4% <<< 5%, we can make the assumption

We can observe that S >> S' ( 1.1696 E-3 M >> 6.4 E-7 M ), which shows that the solubility  is reduced by the efect of the common ion from the salt, which causes the equilibrium to shift to the left, precipitating part of MgF2(s).

8 0
2 years ago
Consider the structure of the amino acid alanine. indicate the hybridization about each interior atom.
OLEGan [10]
The structure of Alanine is shown below,
Except the carbon atom of carbonyl group which is Sp² Hybridized, all remaining atoms are Sp³ Hybridized. The hybridization of each element is depicted in a box below,

5 0
2 years ago
Read 2 more answers
A water molecule is composed of a large oxygen atom bonded to two small hydrogen atoms. Which of the following would make the be
sleet_krkn [62]

The best and most correct answer among the choices provided by your question is the third choice or letter C.

The best model of a water <span>molecule would be: </span><span>Two small, plastic balls attached to a larger plastic ball by toothpicks</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
5 0
2 years ago
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Consider the following properties: I) The red color of rubies is due to the presence of chromium ions. II) Objects made of silve
Alenkinab [10]

Answer:

Only II) is correct

Explanation:

I) The red color of the rubies is a physical property of its own structure (wich contains  chromium ions)

II)Objects made of silver become tarnished not by a physical property, but as the result of a chemical reaction on the surface of the object made of silver in combination with the sulfur in the air

2Ag_{(s)}+S\rightarrow Ag_{2}S

This changes the color of the object to black, (similar to the iron oxidation)

iii)Boiling is a physical change where a liquid substance absorbs heat in some way (e.g. a flame) and becomes a gas

6 0
2 years ago
If 1.0 mole of CH4 and 2.0 moles of Cl2 are used in the reaction CH4 + 4Cl2 =&gt; CCl4 + 4HCl then which of these statements is
nikklg [1K]

Answer:

B,C,D

Explanation:

The yield of CCl4 depends on the amount of CH4 in a 1:1 ratio. The amount of Cl2 is twice that of CH4 hence some must be left over. To ensure that all the Cl2 is used up, more CH4 must added to the system.

4 0
2 years ago
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