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Are pure substances homogeneous or heterogeneous
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What is the temperature of one mole of helium gas at stp?
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The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.
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How have the greenhouse gasses increased from the year 2000 to 2018
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Are pure substances homogeneous or heterogeneous...
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