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Alcane, in which there are 20 % of H, is being dehydrogenated. After dehydrogenation, in the consisted hydrocarbon the volume of H is 14,2 % . While dehydrogenation there was 18,06 * 10^23 H molecules separated. First part of hydrocarbon is being influenced with oxygen, the second – with oxygen with catalyst Ag in the temperature of 300 degrees of Celsium. The made gas is eliminated and the liquids are mixed. What is the volume of oxygen in the forthcoming compound? How is this compound called? What is it used for?

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Now i'm not sure about this alcane for i don't know if there's such a translation from my language to english for this word. In my language, its called "alkanas". Maby someone will know what i'm talking about.
So if anybody does, please reply and help me doing this exercise.
Thanks in advance!