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
Zepler [3.9K]
3 years ago
8

Why do the oil and vinegar separate into layers when they are stirred together, but completely mix when lecithin is stirred in?

Chemistry
1 answer:
Sedaia [141]3 years ago
4 0

Answer:

See explanation

Explanation:

Vinegar and oil have different densities, as such we expect the two substances to separate when mixed. However, oil constitutes the organic phase(water insoluble) while vinegar constituents the aqueous phase since it is water soluble.  Therefore, the two substances separate into layers when left to stand for a while.

The structure of lecithin makes it a good emulsifier. Hence, it can be able to cause oil and vinegar to mix, constituting a single phase when lecithin is stirred in.

You might be interested in
What is the molar concentration of
Leto [7]

Answer:

1.42 M

Explanation:

First calculate the amount of moles.

that's done by dividing the mass with the molecular mass so 660g / 310.18 g/mol = 2.13 mol

Then you can calculate the molarity by dividing the moles with the volume so 2.13 mol / 1.5 l = 1.42 M

(without rounding: 1.418531175 M)

3 0
2 years ago
Determine whether the reaction will be spontaneous at high temperatures only, at low temperatures only, at all temperatures, or
LiRa [457]

Answer:

The rusting of iron is spontaneous at low temperatures.

Explanation:

The given chemical reaction is:

4Fe(s) + 3O2(g) ----> 2Fe2O3(s) [rust]

The rusting of iron is a chemical reaction in which iron reacts with oxygen in presence of moisture and forms iron oxide.

This reaction takes place in a faster rate when there is low temperatures in the atmosphere.

When temperature is low, the moisture in the atmosphere is more and hence, rate of rusting is more.

5 0
2 years ago
1- What do greenhouse gases do in our atmosphere? a. They absorb radiation given off by the Earth b They block harmful radiation
zavuch27 [327]

Answer: A. They absorb radiation given off by the earth.

Explanation: Green house gases are gases that have the capability of trapping the heat energy from the sun in our environment. These special attribute of these gases is what keeps our environment warm and sustain life as we know it. Example of Green House Gases include: carbon dioxide, water vapour and methane.

8 0
3 years ago
Read 2 more answers
Name a common greenhouse gas with only hydrogen and oxygen
AVprozaik [17]
I'm guessing water vapour. i can't think of any other gas limited to only hydrogen and oxygen

hope it helps :)
3 0
2 years ago
Which of the following liquids or solutions, at the same concentration, will have the lowest freezing point and why?
jok3333 [9.3K]

Answer:idk

Explanation:Idk

6 0
2 years ago
Other questions:
  • Neutral atoms contain equal numbers of A protons and electrons. B protons and neutrons. C electrons and neutrons. D protons, ele
    12·1 answer
  • Which of the following is teue of solids? A. They have less kinetic energy than liquids, gases, and plasmas. B.They have slightl
    11·1 answer
  • Plz help! Need this!
    12·2 answers
  • Consider the following system at equilibrium: 2A(aq)+2B(aq)⇌5C(aq) Classify each of the following actions by whether it causes a
    8·1 answer
  • ASAP HELP PLZZZZ
    11·1 answer
  • What material was added to powdered rock during tuttle and bowen's experiments?
    10·1 answer
  • Consider the reaction of NO and CO to form N2 and CO2, according to the balanced equation: 2 NO (g) + 2 CO (g) → N2 (g) + 2 CO2
    15·1 answer
  • What are the major parts of the ecosystem
    15·1 answer
  • Which one of the give elements the least reactive?
    13·2 answers
  • Using the data in the tables and Coulomb's law, calculate the energy change for this reaction (per formula unit of KF).
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!