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If element x has 40 protons, how many electrons does it have
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According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead
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Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?
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One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)
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If element x has 40 protons, how many electrons does it have...
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