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3 years ago

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.

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Which sample of copper has atoms with the lowest average kinetic energy?

algol [13]

I believe your answer is 40g 15*C I hope that helps.

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3 years ago

How hot, in degrees Celsius, would the air inside the balloon have to get in order for the balloon to lift off the ground? Assum

SVETLANKA909090 [29]

Answer:

The temperature in degress Celsius is 52.25°C

Explanation:

According the equation:

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$\rho _{t}=\rho _{a} -0.115=1.2-0.115=1.085kg/m^{3}$

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3 years ago

write word and formula equation for the reaction in which aqueous solutions of sulfuric acid and sodium hydroxide reacts to form

FromTheMoon [43]

Answer:

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Explanation:

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3 years ago

Read 2 more answers

A(n) ____________ is a substance in which all the exact combinations of elements are always the same.

sveta [45]

B. compound
source is Glencoe Science book grade 7.
Also I just happening to be learning about this at school

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2 years ago

Put the following elements into five pairs of elements that have similar chemical reactivity: F, Sr, P, Ca, O, Br, Rb, Sb, Li, S

kirill115 [55]

Explanation:

Given elements:

F, Sr, P, Ca, O, Br, Rb, Sb, Li, S

Elements with the same chemical reactivity will belong to the same group on the periodic table. This implies that elements in the same column will have the same reactivity;

Li and Rb are both alkali metals in group 1

Ca and Sr are both alkali earth metals in group 2

F and Br are halogens in group 7

O and S are group 6 elements

P and Sb are both in group 5 on the periodic table

So these groupings show elements with the same chemical properties.

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2 years ago