
Concept explainers
Interpretation: The mass of water vapor produced from burning of
Concept introduction: The ratio of mass of substance to its molar mass is said to be number of moles of that substance.

Answer to Problem 17A
The mass of water vapor produced from burning of
Explanation of Solution
The balanced complete chemical equation for the formation of water vapor from hydrogen and oxygen gas is:
The molar mass of hydrogen gas is 2.016 g/mol. The number of moles of hydrogen is calculated as shown:
From the balanced
Now, the mass of water vapor produced from
The molar mass of water is 18.015 g/mol. So,
Hence, the mass of water vapor produced from burning of
Chapter 9 Solutions
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