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650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal
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How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal
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Write a paragraph about the placement of the Northern Hemisphere during the seasons.
The changes of...
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