In a certain experiment a sample of helium in a vacuum
In a certain experiment a sample of helium in a vacuum system was compressed at 25 degrees C from a volume of 200.0 mL to a volume of 0.240 mL where its pressure was found to be 30.0 mm Hg. What was the orginal pressure of the helium?
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phosphorus-32 decays by beta emission to form sulfur-32 how many half-lives have passed in the reaction shown
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in a certain experiment a sample of helium in a vacuum system was compressed at 25 degrees c from a volume of 2000 ml
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