問題詳情

9.The average mass of a boron atom is 10.81.If you were able to isolatea single boron atom, whatisthe chance that you wouldjrandomly get an atom with mass 10.81?1⑷ 0%
(B)0.81%
(C)about 11%
(D)10.81%
(E)greater than 50%j

參考答案

答案:A
難度:適中0.5
統計:A(2),B(0),C(0),D(1),E(0)

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