Some Basic Concepts Of Chemistry Question 133

Question: How many moles of electron weigh one kilogram?

Options:

A) 6.023×1023

B) 19.108×1031

C) 6.0239.108×1054

D) 19.108×6.023×108

Show Answer

Answer:

Correct Answer: D

Solution:

[d] Mass of one electron =9.108×1031,kg

1 kg contain =19.108×1031 electron =19.108×1031×16.023×1023 moles of electron or

19.108×6.023×108 moles



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