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Fluorine-21 has a half life of approximately 12 seconds. What fraction of the original nuclei would remain after 1 minute?
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Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh
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Why doesn't heat added to water make the tempature rise above 100c
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8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
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1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?
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Fluorine-21 has a half life of approximately 12 seconds. What fraction of the original nuclei would...
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