Chemistry

Which of the following elements has the heaviest atomic weight?

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Which of these is a fuel?
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Praseodymium on the periodic table is noted by which symbol?
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What symbol appears on the periodic table for the element with the atomic number 96?
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What are chemicals made from oil called?
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What are the building blocks of matter called?
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What are chemicals that reduce or prevent oxidation called?
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What symbol appears on the periodic table for Unnilquadium which has the atomic number 104?
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Dr Pepper shares what main ingredient of most antifreezes?
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