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3 years ago

Compared to pure water, an aqueous solution of calcium chloride has what?

Chemistry

1 answer:

V125BC [204]3 years ago

8 0

It has a higher boiling point and a lower freezing point

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Why must protein digesting enzymes be stored in the inactive form

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To shield the organs and glands from the enzymes' digestion, protein digesting enzymes are released in an inactive state. If they are discharged in an active state, they begin digesting the glands that transport them as well as the release site.

Explanation:

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2 years ago

Kevin is working on a model that shows the positions of Earth, the Moon, and the Sun during the phases of

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3 years ago

Read 2 more answers

Does pyridine undergo nucleophilic aromatic substitution reactions? If no, why not. If yes, on what position does the substituti

sergij07 [2.7K]

Explanation:

Part a

Pyridine is an aromatic heterocyclic compound and undergoes nucleophilic aromatic substitution reaction at 2 and 4 positions.

This is because, when a nucleophile attack pyridine at 2 and 4 positions, the anoin formed is stabilized. In the anion formed is tabilized by resonance and also negative charge is present at electronegative atom, nitrogen.

If the nucleophile attack at 3 position, the anion formed is not as stable as anions formed when nucleophile attach at 2 and 4 positions. This is because negative charge is not present at the nitrogen atom.

Part b:

Tautomers are structural isomers of each others formed by migration atom within the molecule. Tautomers exist in equilibrium with each other.

Tautomers of 2-Hydroxypyridine and 4-Hydroxypyrine are given in the attachment.

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3 years ago

You crumple a piece of paper in your hands. Not all of the kinetic energy from your hands is used to crumple the paper. Where do

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When you crumble a piece of paper it make a sound plus i just did on apex

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2 years ago

___________ polymers can be produced in large quantities at low cost. please. thank you.

MA_775_DIABLO [31]

Answer:

Plastic polymers

Explanation:

Plastic polymers are usually made up of synthetic and semi-synthetic polymers such as polyethylene, polystyrene etc.

Plastic polymers have a unique property called malleability. Malleability is the ability of a substance to be moulded into different sizes and shapes.

When hear is applied plastics gets soft and can be molded into different forms and then it becomes hardened after exposure to air(dried).

The plastic polymers are usually very cheap to produce in large quantities which is why it is very common in industries.

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3 years ago