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erastova [34]
3 years ago
14

The blank spaces say absorbed from and released to

Chemistry
1 answer:
ryzh [129]3 years ago
6 0

Explanation:

• In an exothermic reaction, energy is released in the surroundings.

• In an endothermic reaction, energy is absorbed from the surroundings.

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em> </em>

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What has been the effect of increased population on Earth's natural resources?
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Answer:

Generally speaking, as the human population grows, our consumption of natural resources increases. More humans consume more freshwater, more land, more clothing, etc. Scientific and technological innovations mean that we are improving our efficiency at using and harvesting natural resources.

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5 0
3 years ago
A gas occupies 1200 litres at 2 atm pressure. To what pressure must it be compressed to occupy 60 litres at the same temperature
MArishka [77]

P2 = 40 atm

Explanation:

Given:

P1 = 2 atm

V1 = 1200 L

V2 = 60 L

P2 = ?

Using Boyle's law and solving for P2,

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P2 = (V1/V2)P1

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3 years ago
Which of the following occurs due to static electricity? Question 9 options: lightening sunlight star light moon phases
horrorfan [7]
<h3><u>Answer;</u></h3>

Lightening

<h3><u>Explanation;</u></h3>
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  • Lightening occurs as a result of a build up of electric charge in a cloud. It occurs when negative charges jump from a cloud to the ground.
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7 0
3 years ago
Write a formula for the ionic compound that forms from magnesium<br> and oxygen.
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Answer:

MgO

Explanation:

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Why do chemical equations have to be equal
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Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, there must be the same number of atoms of each element on each side of a chemical equation.

Explanation:

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