the mass of 1 mole of electrons is1 91x 10-28g2


The mass of 1 mole of electrons is:

(1) 9.1x 10-28g

(2) 1.008mg

(3) 0.55mg

(4) 9.1x 10-27g

Ans:  (3)0.55mg

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Physics: the mass of 1 mole of electrons is1 91x 10-28g2
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