Question

help me plz it urgent ​

Answer 1

Answer:

So the mass of 1 mole of electron is

$\boxed{\textbf{\large{0.55mg}}}$

Explanation

[you can refer this given figure in the attachment from this multiply the avogadro Number [6.022 x 10^23 ]To the mass of electron for to get a 1 mole of mass of electron ]

1 mole = 6.022x 10^23 [avogadro No]

Mass of 1 electron = 9.1 X 10^-31 kg

so, The

mass of 1 mole of electron

=9.1 X 10^-31 X 6.022x10^23

=54.8002 x 10^-8 kg

so take a approximate value of 54.8002 ~ 55

= 55 X 10^-8kg

convert the unit kg into g, to convert multiply the solution by 10^6 .

= 55x 10^-8x10^6

= 55 x 10^(-8+6)

=55 X 10^-2

=0.55 mg

So the mass of 1 mole of electron is

$\boxed{\textbf{\large{0.55mg}}}$