Chemistry

Which of the following substances is industrially prepared by the contact process?

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What symbol appears on the periodic table for Thorium which has the atomic number 90?
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In evaporation, water turns into what?
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What is the usual ounce capacity of a jigger?
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What is the chemical element with symbol "N" and atomic number 14?
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Which of these is a state of matter?
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What symbol appears on the periodic table for the element with the atomic number 62?
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Which of these elements has the highest density?
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Reacting an alkene with water produces which of the following?
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