Chemistry

Which of these is a heavy gas used in specialized electric lamps?

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What does the gall bladder secrete?
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Which of the following activities is an example of changing a physical property?
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Who wrote the book "The Principles of Chemistry"?
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Which of these is a weakly ionized acid?
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How many more times acidic is a solution of pOH 5 than a solution of pH 5?
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What gas makes soda bubbly?
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Which of these would be used to measure the volume of liquid in a glass?
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Which of these objects has the most mass?
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