Chemistry

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

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What does "ATP" stand for in chemistry?
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Which of the following structures best characterizes glass?
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What symbol appears on the periodic table for the element with the atomic number 100?
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What is best described as the separation of a material into elements or parts?
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Which of the following is a compound?
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What is the symbol used on the periodic table for the element Americium?
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What gas makes up most of the atmosphere of Mars?
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What symbol appears on the periodic table for Magnesium which has the atomic number 12?
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