Chemistry
What radioactive metallic element, found in all uranium ores, has an atomic number of 89?
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Which of the following is used as a rating scale to grade gasoline?
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Which of the following is the list of hydrogen halides of group 7A from highest boiling point to lowest?
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What is the half-life of Potassium 40 as it decays to Argon?
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What will happen to a bowl of ice cream left in the sun?
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What are proteins that help speed up chemical reactions called?
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How many elements in the actinide series are not radioactive?
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The noble gases that make up Group XVIII of the periodic table is also known as which of the following?
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