Applying Concepts
These questions test conceptual learning.
A substance is analyzed and found to contain 85.7% carbon and 14.3% hydrogen by mass. A gaseous sample of the substance is found to have a density of 1.87 g/L at STP.
(a) What is the molar mass of the compound?
(b) What are the empirical and molecular formulas of the compound?
(c) What are two possible Lewis structures for molecules of the compound?
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