Chemistry, 19.10.2019 04:30 silasjob09

Tell whether the following solvents would be the top or bottom layer in an aqueous extraction

a) methanol

b) hexane

c) benzene

d) dichloromethane

e) diethyl ether

Answers: 1

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Answer from: zivicion

Only dichloromethane will be present as bottom layer and other given solvents will be present as top layer in an aqueous extraction.

Explanation:

Whether the aqueous layer would be present on top or bottom, is decided by densities of the solvent.

Solvent which is less denser than water will be present as top layer in aqueous extraction and solvent which is more denser than water will be present as bottom layer.

Therefore,

a) Methanol is less dense than water, hence will be present as top layer in an aqueous layer.

b) Hexane is less dense than water, hence will be present as top layer in an aqueous layer.

c) Benzene is less dense than water, hence will be present as top layer in an aqueous extraction.

d) dichloromethane is more dense than water and hence will be present as bottom layer in aqueous extraction

e) diethyl ether is less dense and will be present as top layer in an aqueous layer.

So, only dichloromethane will be present as bottom layer and other given solvents will be present as top layer in an aqueous extraction.

Answer from: Quest

It changes food into energy that the organism can use.

Answer from: Quest

Mass is the amount of matter in an object. weight is the measurement of the pull of gravity on an object. say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165) now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon. however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant. in conclusion it is possible for your weight to change as your mass remains constant.

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Tell whether the following solvents would be the top or bottom layer in an aqueous extraction
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