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Chemistry, 21.06.2019 15:30
Becquerel expected to find ( he developed the photographic plate that had sun-exposed minerals on top of it. becquerel expected to find ( he developed the photographic plate that had been in the closed drawer.
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Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?
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What is the relationship of air masses and the temperature of oceans?
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Chemistry, 22.06.2019 11:00
The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
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1. what do the numbers 1-18 represent on a periodic table?...
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