How many moles of electron weight one kilogram?
a. 6.023×10236.023×1023
b. 6.023×1086.023×108
c. 9.108×10549.108×1054
d. 1.82×1081.82×108
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How many moles of electron weight one kilogram?
a. 6.023×10236.023×1023
b. 6.023×1086.023×108
c. 9.108×10549.108×1054
d. 1.82×1081.82×108
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Answer:
Mass of electron = 9.1 x 10-31Kg One mole of electrons = 6.023×1023 Mass of 1 mole of electrons = 6.023×1023 x 9.1 x 10-31Kg We need to find out moles of electrons in 1 Kg Hence out moles of electrons in 1 Kg = 1kg x 1mole/ 6.023×1023 x 9.1 x 10-31Kg =1.825 x 106 moles of electrons.
Total mass = 1 kg
Mass of one electron = 9.108 × 10 31 kg
Number of electrons present in 1 kg of 1 kg -31 9.108 x 103 kg = 1.0979 x 1030
sample =
Avogadro's number = 6.023 x 1023
The number of moles of electrons weighs one kilogram
1
9.108 x 10 -31 6.023 x 1023 x
The number of moles of electrons weigh 1 9.108 x 6.023 = 108
one kilogram
Hence, the correct option is D