Multiple Choice
Which of the following samples of matter is classified as a mixture?
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1. Intro to General Chemistry
Classification of Matter
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Which of the following is the most abundant gas in Earth's atmosphere?
A
Oxygen (O_2)
B
Nitrogen (N_2)
C
Carbon dioxide (CO_2)
D
Argon (Ar)
Verified step by step guidance1
Understand that Earth's atmosphere is composed of several gases, each present in different proportions.
Recall that the most abundant gas in the atmosphere is the one with the highest volume percentage.
Remember the approximate volume percentages of the main atmospheric gases: Nitrogen (N\_2) about 78%, Oxygen (O\_2) about 21%, Argon (Ar) about 0.93%, and Carbon dioxide (CO\_2) about 0.04%.
Compare these percentages to identify which gas has the greatest abundance.
Conclude that Nitrogen (N\_2), with approximately 78% of the atmosphere, is the most abundant gas.
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