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Consider the combustion of octane in air. Assume the air is dry. After analyzing the products, the volumetric composition of CO 2 is 1 0

Consider the combustion of octane in air. Assume the air is dry. After analyzing the products,
the volumetric composition of CO2 is 10.02%, O2 is 5.62%, CO is 0.88% and N2 is 83.48%.
Hint: Gas analyzer typically do not measure the amount of water and determine the exhaust
composition on a dry basis. Water should be considered as one of the products.
a) What was the air/fuel ratio?
b) What percentage of theoretical air was utilized?
c) If the products are cooled to 25\deg C at 100 kPa, what percentage of water condenses?

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