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Embryos of different species look very similar, which shows that the organisms share a ancestor.
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Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?
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Complete each row of the table below by filling in the missing prefix or missing exponent.
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Witch is the best discription of a molecule...
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