Chemistry, 17.07.2019 07:20 jaychavez1926
Boron has an atomic mass of 11. how many neutrons are in its nucleus? use the periodic table if you wish.
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Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3ยทxh2o; you should do this also. round your answer to the nearest integ
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Boron has an atomic mass of 11. how many neutrons are in its nucleus? use the periodic table if you...
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