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So2 h2so4. Сахароза + h2. H2so4. Уголь + h2.
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C 7 h 8
C x h y
Угол c c h
X c h a n
X c h a r a
V h v c f r
G l v c h
C h уравнение
C r g v h
C 5 h 7
So2 h2so4. Сахароза + h2. H2so4. Уголь + h2.