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evablogger [386]
3 years ago
5

A compound composed of only C and H contains 79.88 % C by mass. What is its empirical formula?

Chemistry
2 answers:
lozanna [386]3 years ago
5 0
The answer is A I think
Rufina [12.5K]3 years ago
3 0

Answer:

a. CH3

Hope this helps.

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Which of the following is an example of a mixture?
valentinak56 [21]
A. The atmosphere

All the other examples are either elements or compounds, not mixtures. A mixture is a combination of elements that are not chemically or irreversibly conjoined so the atmosphere, made up of a variety of gases, would be a mixture.
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Describe the three main types of plate boundary interactions:
bulgar [2K]

Answer:

In the explanation

Explanation:

Divergent: When two plates are diverging from each other, meaning that the two plates are moving away from each other. Events that may occur include ridges or rifts.

Convergent: When two plates are moving towards each other.

If a continental plate and an oceanic plate are converging, the oceanic plate would slide underneath the continental plate since it is thinner. This would result in subduction, which means that part of the oceanic plate would hang underneath the continental plate, where magma can melt the hanging part.

If two continental plates are converging, the crash would result in mountains or volcanic activity. Magma could rise and rush from the crack. There would be a bump in these tectonic plates.

Transform: When two plates are sliding past each other. Earthquakes can occur when the plates are sliding. When an oceanic plate is involved, the movement of the plates could cause a tsunami as well. The water above the transform fault could rise, and grow bigger and bigger. The 2011 Japan Tsunami is a good example of this.

Hope this helps!

5 0
3 years ago
A sample of radium-226 contains 1.0×108 atoms of radium-226. How many atoms of radium-226 will remain in the sample after three
cricket20 [7]
After 3 half lives it will be (1/2)^3 or 1/8 of original

so
1/8 times 10^8=1.25 x 10⁶ atoms left
4 0
3 years ago
Which type of succession will occur in this
nexus9112 [7]

Answer:

secondary, because there are some remains of the previous community (C)

Explanation:

6 0
3 years ago
Read 2 more answers
List the 9 foods that weaken your immune system and explain why.<br><br> NO LINKS
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Answer:

salty foods

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Salty foods like chips, frozen dinners, and fast food may impair your body's immune response, as high salt diets may trigger tissue inflammation and increase the risk of autoimmune diseases.

3 0
2 years ago
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