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What is the mass of a 10 gram sample of potassium-42 that will remain unchanged after 12.4 hours
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As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter
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Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?
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What is the mass of a 10 gram sample of potassium-42 that will remain unchanged after 12.4 hours...
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