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Bond [772]
3 years ago
10

Did I get these correctly?

Chemistry
1 answer:
Luda [366]3 years ago
4 0
Those are both correct! great job, keep up the good work (-:
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all pure substance are molecules

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What is the disadvantage of using models to study the food web?
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Which of the following is an example of a model? PV=nRT, Geographical map, I believe that aliens exist, all of the above.
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<u>Answer:</u> The correct answer is geographical map.

<u>Explanation:</u>

Model is defined as the three dimensional representation of a proposed structure in a smaller scale.

For the given options:

<u>Option 1:</u>  PV = nRT

This is a proposed law. This law is known as ideal gas law. A law is defined as the rule which defined a correct procedure. For any gas behaving ideally, this law is used.

<u>Option 2:</u> Geographical map

Map is defined as the diagrammatic representation of an area of land or sea which also shows physical features, roads, cities etc..

A 3-D model can be prepared for geographical map.

<u>Option 3:</u> I believe that aliens exist

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Hence, the correct answer is geographical map.

3 0
3 years ago
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What are three facts you already know about matter?
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Answer:

i found this hope it helps

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Matter is another word for the stuff things are made of. Everything around us is made of matter, from the air we breathe to the water we drink—even our own bodies. Planet Earth is made of matter, and so are all the stars, planets, and moons in the universe. All matter is made up of tiny particles called atoms.

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What is the mass in grams of 85.32 mL of blood plasma with a density of 1.03 g/mL?
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