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35 cm3 of hydrogen was sparked with 12 cm3 of oxygen at 110°C and 760mm Hg to ...

35 cm3 of hydrogen was sparked with 12 cm3 of oxygen at 110°C and 760mm Hg to produce steam. What percentage of the total volume of gas left after the reaction is hydrogen?

A. 11%
B. 31%
C. 35%
D. 69%




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