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maw [93]
3 years ago
15

The gas that makes up about 12 percent of the earths atmosphere is ?

Chemistry
1 answer:
ElenaW [278]3 years ago
7 0

Answer:

You may be referring to the gas that makes up 21% of the earth's atmosphere, which is oxygen.

Explanation:

According to NASA, the gases in Earth's atmosphere include:

Nitrogen — 78 percent

Oxygen — 21 percent

Argon — 0.93 percent

Carbon dioxide — 0.04 percent

(Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor)

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The pH of a solution is measured as 4.5. What is the hydrogen ion concentration of the solution?
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Answer:

[H⁺] =  3.16 × 10⁻⁵ mol/L

Explanation:

Given data:

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we will rearrange this formula:

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Tomtit [17]

Answer:

true

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