Which of the following alkanes has the lowest density?

Which of the following alkanes has the lowest density?

Step 1: Understand what alkanes are. Alkanes are a type of hydrocarbon that consist only of carbon (C) and hydrogen (H) atoms, with single bonds between them.
Step 2: Identify the alkanes in the question. Common alkanes include methane (CH4), ethane (C2H6), propane (C3H8), and butane (C4H10).
Step 3: Know the general trend of alkane densities. As the number of carbon atoms in alkanes increases, their density generally increases.
Step 4: Compare the densities of the alkanes. Methane (CH4) has the least number of carbon atoms and is known to have the lowest density among the alkanes.
Step 5: Conclude that since methane has the lowest density, it is the correct answer to the question.

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