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Is lighting a candle a physical change or a chemical change
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Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.
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Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?
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Using data from seismic waves, geologists have learned that earth’s interior is made up of several
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Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.
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