Which of the gases in the graph below has the smallest molar mass? 
Definitions:
Subjective Approach
A method of decision making or analysis that is based on personal judgment, opinions, or preferences rather than objective data.
Simple Event
An event consisting of only one outcome in a probability experiment.
Sample Space
The set of all possible outcomes of a random experiment or event.
At Least 3
A criterion stating that a condition or quantity should be three or more, not less.
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