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tatyana61 [14]
3 years ago
10

(50 POINTS!)

Chemistry
2 answers:
aleksandrvk [35]3 years ago
7 0

Answer:

Can I get my 50 points now?

Explanation:

The helium is formed during the natural radioactive decay of elements such as uranium and thorium. These heavy elements were formed before the earth but they are not stable and very slowly, they decay. One mode of decay for uranium is to emit an alpha-particle.

nasty-shy [4]3 years ago
4 0
The sun converts hydrogen atoms into helium.
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Once the sun's energy reaches the earth's atmosphere through radiation, it is circulated within the atmosphere and oceans throug
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B) convection

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Once the sun's energy reaches the earth's atmosphere by radiation, it is circulated within the atmosphere and oceans through convection.

The energy of the sun on earth is moved between the ocean and the atmosphere by air around us.

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When you need to produce a variety of diluted solutions of a solute, you can dilute a series of stock solutions. A stock solutio
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Answer:

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<u> </u>Dilution consists of lowering the amount of solute per unit volume of solution. It is achieved by adding more diluent to the same amount of solute.

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Solutions in the attachment.

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