Chemistry
What symbol appears on the periodic table for the element with the atomic number 22?
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What symbol appears on the periodic table for Oxygen which has the atomic number 8?
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Silver chloride and silver nitrate are both chemicals that darken with exposure to what?
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Which Middle Eastern country was widely accused of using chemical weapons in 2013?
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Approximately how many chemicals are in a cup of coffee?
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What compounds that are soluble in water are classed as bases?
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Which type of matter has definite volume but no definite shape?
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Which molecule may interact with cyclin dependent kinase?
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