Chemistry
What symbol appears on the periodic table for Thorium which has the atomic number 90?
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What symbol appears on the periodic table for the element with the atomic number 14?
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Which scientist was the first to discover that for DNA, "A=T and C=G"?
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What is used to remove oxygen from cathode ray tubes and vacuum tubes?
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What is the molecular geometry of the molecule sulfur hexafluoride?
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What is thermal energy that moves from warmer objects to cooler ones called?
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What is the chemical term for a peptide; two amino acids linked together?
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What element gets its name from the Greek word "kryptos" meaning "the hidden one"?
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