question_answer

What is the mass of one mole (\[\text{6}.0\text{23}\times \text{1}{{0}^{\text{23}}}\]) electrons?

Answer:

Mass of each electron\[({{m}_{e}})=9.1\times {{10}^{28}}g\] No. of electrons \[(n)=6.023\times {{10}^{23}}\] Total mass of electrons \[=n\times {{m}_{e}}\] \[=6.023\times {{10}^{23}}\times 9.1\times {{10}^{28}}=\text{ }54.8\times {{10}^{5}}g\]