The answer to this question would be: 3.125%
Half-life is the time needed for a radioactive molecule to decay half of its mass. In this case, the strontium-89 is already gone past 5 half lives. Then, the percentage of the mass left after 5 half-lives should be:
100%*(1/2^5)= 100%/32=3..125%
Answer:
6 electrons
Explanation:
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The two oxygen atoms share two pairs of electrons, so two covalent bonds hold the oxygen molecule together
Answer:
Atomic mass is never an integer number for several reasons
