A burner in a gas grill mixes 20 volumes of air for every one volume of propane (C₃H₈). For gases at a given temperature and pressure, the volume that the gas occupies is directly proportional to the number of moles of the gas. Air is 21% oxygen by volume. Is the mixture produced by this burner rich (excess propane), lean (excess oxygen), or just right (a stoichiometric mixture of propane and oxygen)?

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The Answer of A burner in a gas grill mixes 20 volumes of air for every one volume of propane (C₃H₈). For gases at a given temperature and pressure, the volume that the gas occupies is directly proportional to the number of moles of the gas. Air is 21% oxygen by volume. Is the mixture produced by this burner rich (excess propane), lean (excess oxygen), or just right (a stoichiometric mixture of propane and oxygen)?

A Burner in a Gas Grill Mixes 20 Volumes of Air