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If the e/m value of electron is 1.7588 x 10^11 C/kg, then what would be the mass of electron in grams (charge on electron is 1.6022 x 10^-19 coulombs)?

Correct answer: C. 9.1095 x 10^-28 g

  • A. 9.1095 x 10^-31 g
  • B. 91.095 x 10^-31 g
  • C. 9.1095 x 10^-28 g
  • D. 0.919095 x 10^-33 g

Explanation

If e/m is equal to 1.7588x10^11 and the charge on an electron is 1.6 x10^-19 then the mass can be calculated as: 1.7588x10^11=1.6x10^-19/m m-9.109 x 10^-31kg. In g, 9.1x10^-28 g As it is numerical, it can have only one possible answer.

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