11 grade chemistry others
The third most abundant gas in Earth's atmosphere is:A. CarbonB. Nitrogen C. OxygenD. Argon
The third most abundant gas in Earth's atmosphere is:A. CarbonB. Nitrogen C. OxygenD. Argon
1 Answer
Askiitians Tutor Team
To determine the third most abundant gas in Earth's atmosphere, let's first look at the composition of the atmosphere:
Nitrogen (N₂): Approximately 78% of the atmosphere.
Oxygen (O₂): About 21% of the atmosphere.
Argon (Ar): Roughly 0.93% of the atmosphere.
Carbon Dioxide (CO₂): Around 0.04%, although this value can vary slightly due to human activities.
From this information, we can see that:
1st most abundant gas: Nitrogen (78%)
2nd most abundant gas: Oxygen (21%)
3rd most abundant gas: Argon (0.93%)
Thus, the answer is D. Argon.
Explanation: The question asks for the third most abundant gas in the atmosphere. By analyzing the approximate percentages of the main gases, we find that after nitrogen and oxygen, argon comes next, making it the correct answer.
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