Question

How many moles of electrons weight one kilogram?

1. 6.023×10²³
2. (1÷9.108)×10³³
3. (6.023÷9.108)×10^54
4. [1÷(9.108×6.023)]×10^8



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Answer 1

Answer:

6.022×10^23 moles

Explanation:

Mass of an electron= 9.1 x 10^-31 Kg. Avagadro Number=6.022 x^10^23. So 1Kg of electrons contain 1.825 x10^6 moles of electrons.

Answer 2

How many moles of electrons weight one kilogram?

1. 6.023×10²³

2. (1÷9.108)×10³³

3. (6.023÷9.108)×10^54

4. [1÷(9.108×6.023)]×10^8