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How many moles of oxygen are needed to produce 15.0 liters of carbon dioxide ?
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What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?
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Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?
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If a sample of radioactive isotopes takes 600 minutes to decay from 400 grams to 50 grams, what is the half-life of the isotope?
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How many moles of oxygen are needed to produce 15.0 liters of carbon dioxide ?...
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