Helium 8 has a half life of 4.5 years. how many rounds have gone by in 27 years?
carounds...
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Chemistry, 22.06.2019 05:50, Makoshark6887
According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?
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Chemistry, 22.06.2019 08:40, jaueuxsn
Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.
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Chemistry, 22.06.2019 12:30, johnsont8377
Avariable that is not being directly tested during an experiment should be changed varied experimented controlled
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