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Chemistry, 22.06.2019 10:30, zayam1626
Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space
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Chemistry, 22.06.2019 14:30, Hannahmiller3773
Connect the whole numbers on the periodic table to indicate what they represent?
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Which element has 19 electrons surrounding the nuclei of its atoms?...
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