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A Small Piece of Aluminum (Atomic Number 13)contains 1015 Atoms

Question 14

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A small piece of aluminum (atomic number 13) contains 1015 atoms.(The atomic number is the number of protons;it determines the (positive) electric charge of the nucleus and,thus,the number of electrons in a neutral atom. ) If the piece of aluminum has a net positive charge of 3.0 μC,what fraction of the electrons that the aluminum had when it was neutral would have had to be lost?


A) A small piece of aluminum (atomic number 13) contains 1015 atoms.(The atomic number is the number of protons;it determines the (positive) electric charge of the nucleus and,thus,the number of electrons in a neutral atom. ) If the piece of aluminum has a net positive charge of 3.0 μC,what fraction of the electrons that the aluminum had when it was neutral would have had to be lost? A) B) C) 1.9 × 10<sup>-20</sup> D) 1.4 × 10<sup>-21</sup>
B) A small piece of aluminum (atomic number 13) contains 1015 atoms.(The atomic number is the number of protons;it determines the (positive) electric charge of the nucleus and,thus,the number of electrons in a neutral atom. ) If the piece of aluminum has a net positive charge of 3.0 μC,what fraction of the electrons that the aluminum had when it was neutral would have had to be lost? A) B) C) 1.9 × 10<sup>-20</sup> D) 1.4 × 10<sup>-21</sup>
C) 1.9 × 10-20
D) 1.4 × 10-21

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