Chemistry
What element has an atomic number of 40?
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Which of the following is not a common brominating agent?
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Which type of matter has definite volume but no definite shape?
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What noble gas has the lowest melting and boiling points of all the elements?
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What is the oxidation number on the chromium in a dichromate ion "(Cr2O7)^2-"?
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What circuit is put on a piece of chemically bathed plastic?
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What isotope of carbon can be used to figure out how old some objects are or when something died?
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What is used to remove oxygen from cathode ray tubes and vacuum tubes?
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