StudentLife3228 StudentLife3228
  • 13-09-2019
  • Chemistry
contestada

What percentage of the mass of a carbon-12 atom is
contributedby its electrons? Given the mass of an electron is
(1/1836)amu.

Respuesta :

tirana tirana
  • 17-09-2019

Answer:

% of mass of electrons in C = 0.0272

Explanation:

Atomic no. of carbon = 6

So, no. of electron = 6

Mass of an electron = [tex]\frac{1}{1836} amu[/tex]

Mass of 6 electrons = [tex]6 \times \frac{1}{1836} = 0.003268 amu[/tex]

Mass of C = 12.0107 u

% of mass of electrons in C = [tex]\frac{Mass\ of\ all\ electrons}{Mass\ of\ C}\times 100[/tex]

% of mass of electrons in C = [tex]\frac{0.003268}{12.0107}\times 100=0.0272 \%[/tex]

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