1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SCORPION-xisa [38]
3 years ago
15

A sample of 19 mg of 9-fluorenone is dissolved in 5 mL of diethyl ether. The resulting organic

Chemistry
1 answer:
maks197457 [2]3 years ago
8 0

Answer:

15.70mg would remain

Explanation:

Partition coefficient is used to extract or purify a solute from a solvent selectively to avoid interference from other substances. For the problem, formula is:

Kp = Concentration 9-fluorenone in ether / Concentration of solute in H₂O

After the solute, 9-fluorenone, is extracted with water, the mass that remains in ether is:

(19mg - X)

<em>Where X is the mass that now is in the aqueous phase</em>

Replacing in Kp formula:

9.5 = (19mg - X) / 5mL / (X /10mL)

0.95X = 19mg - X / 5mL

4.75X = 19 - X

5.75X = 19

X = 19 / 5.75

X = 3.30mg

That means 9-fluorenone that remain in the ether layer is:

19mg - 3.30mg =

<h3>15.70mg would remain</h3>
You might be interested in
Sodium electron configuration in longhand notation
Elden [556K]

Answer:

Na₁₁ = 1s² 2s² 2p⁶ 3s¹

Explanation:

Sodium is present in group 1.

It is alkali metal.

It has one valence electron.

The atomic number of sodium is 11.

Its atomic mass is 23 amu.

The longhand notation of electronic configuration of sodium can be written as,

Na₁₁ = 1s² 2s² 2p⁶ 3s¹

The electronic configuration in shorthand notation( noble gas) would be written as,

Na₁₁ = [Ne] 3s¹

Sodium loses its one valence electron to complete the octet and get stable thus form +1 cation.

It react with halogen and form salt. Such as sodium chloride.

2Na + Cl₂  →  2NaCl

5 0
3 years ago
How many milliliters of 0.0630 m edta are required to react with 50.0 ml of 0.0110 m cu2 ?
gizmo_the_mogwai [7]
Moles Cu+2 = M * V
                     =  0.05 L * 0.011  m
                     = 0.00055 moles

when the molar ratio of Cu2+: EDTA = 1:1 so moles od EDTa also =0.00055 moles

and when the Molarity of EDTa = 0.0630 M

∴ Volume of EDTA =  moles / Molarity
                 = 0.00055 / 0.0630
                 = 0.0087 L = 8.7 L
4 0
3 years ago
What chemical is added to natural gas in case of gas leaks?
tia_tia [17]
<span> Ethyl Mercaptan

Hope this helped!</span>
4 0
3 years ago
Read 2 more answers
Are plant cells affected when water is scarce
liraira [26]
Plant cells are affected as they begin to wilt and reduce photosynthesis
7 0
3 years ago
Read 2 more answers
Which of the following processes would you predict to have a positive value for ΔSºreaction ?
Tomtit [17]
C.

This is because the number of products is greater than the number of reactants. 
5 0
3 years ago
Other questions:
  • Which substance is an Arrhenius base?<br> (1) CH3OH (3) LiOH<br> (2) CH3Cl (4) LiCl
    13·1 answer
  • 1. What two phases of matter make up fluids?​
    13·2 answers
  • Scientists are studying compounds in a newly discovered rain forest plant. the plant produces an unusual substance that local pe
    8·2 answers
  • Please help with my chemistry! PLEASE
    13·1 answer
  • What is the specific heat of silicon if the temperature of a 4.11 g sample of silicon
    9·1 answer
  • Subscribe to pewdiepie<br><br> Before coco pass him
    6·2 answers
  • Which of the following processes is involved in the formation of sedimentary rocks?
    9·2 answers
  • Need answer for 9.0mm x 2.0mm x 2.0mm
    14·1 answer
  • Which property is the same for a 50 mL sample of liquid water and a 100 mL sample of liquid water?
    15·1 answer
  • the reaction between nitrogen and hydrogen to produce ammonia is described by the following equilibrium reaction. 3h2 n2↽−−⇀2nh3
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!