Multiple Choice
Which term describes anything that has mass and occupies space?
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1. Intro to General Chemistry
Classification of Matter
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Approximately what percentage of Earth's atmosphere is composed of nitrogen gas (N_2)?
A
10%
B
78%
C
21%
D
50%
Verified step by step guidance1
Understand that Earth's atmosphere is primarily composed of several gases, with nitrogen (N_2) and oxygen (O_2) being the most abundant.
Recall that nitrogen gas (N_2) makes up the largest portion of the atmosphere by volume.
Recognize that the approximate percentage of nitrogen in the atmosphere is around 78%, which is a well-established scientific fact.
Compare the given options (10%, 78%, 21%, 50%) to this known value to identify the correct percentage.
Conclude that the correct answer is 78%, as it closely matches the known composition of nitrogen in Earth's atmosphere.
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