give the reaction of oleum
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biology I don't like it.
it's waste subject to me because of my biology teacher.
sorry I not passed in my biology also at last I copy and passed my 10 th class exam.
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Oleum, or fuming sulfuric acid, is a solution of various compositions of sulfur trioxide in sulfuric acid, or sometimes more specifically to disulfuric acid (also known as pyrosulfuric acid). Formula of oleum is H2S2O7 .
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