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    Calculate the mass and charge of one mole of electrons. Given: Mass of one electron = 9.10 × 10^

    Click here👆to get an answer to your question ✍️ Calculate the mass and charge of one mole of electrons. Given: Mass of one electron = 9.10 × 10^-31 kgCharge of one electron = 1.602 × 10^-19 coulomb

    Question

    Calculate the mass and charge of one mole of electrons.

    Given:

    Mass of one electron = 9.10×10

    −31 kg

    Charge of one electron = 1.602×10

    −19 coulomb Medium Open in App

    Updated on : 2022-09-05

    Mass of 1 mole of electrons:

    Solution Verified by Toppr 9.10×10 −31 ×6.023×10 23 =5.486×10 −7 kg

    Charge of 1 mole of electrons:

    1.602×10 −19 ×6.023×10 23 =9.647×10 4 coulomb Video Explanation

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    स्रोत : www.toppr.com

    Calculate the mass and charge of 1 mole of electrons.

    (a) Mass of 1 electrons = 9.1 xx 10 ^(-31) kg Mass of 1 mole of electrons = Mass of 6. 0 23 xx 10 ^(23) electron = 6. 0 23 xx 10 ^(23) xx 9.1 xx 10 ^(-31) kg = 5. 48 xx 10 ^(-7) kg (b) Change on 1 electron =1 . 6 xx 10 ^(-19) C Charge on 1 mole of electrons = charge on 6. 02 xx 10 ^(-23) electrons = 6. -0 23 xx 10 ^(23) xx 1. 6 xx 10 ^(-19) = 9. 65 xx 10 ^(4) C.

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    Calculate the mass and charge of 1 mole of electrons.

    Updated On: 27-06-2022

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    Text Solution Open Answer in App Solution

    (a) Mass of 1 electrons

    =9.1× 10 −31 kg =9.1×10-31kg

    Mass of 1 mole of electrons = Mass of

    6.023× 10 23 6.023×1023 electron =6.023× 10 23 ×9.1× 10 −31 kg=5.48× 10 −7 kg

    =6.023×1023×9.1×10-31kg=5.48×10-7kg

    (b) Change on 1 electron

    =1.6× 10 −19 C =1.6×10-19C

    Charge on 1 mole of electrons = charge on

    6.02× 10 −23 6.02×10-23 electrons =6.−023× 10 23 ×1.6× 10 −19 =9.65× 10 4 C.

    =6.-023×1023×1.6×10-19=9.65×104C.

    Answer

    Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

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    The mass and charge of one mole of electrons respectively class 11 chemistry CBSE

    The mass and charge of one mole of electrons respectively is A 548 times 10 7Kg 965 times 104C B 548 times 10 7Kg 965 times 103C C 548 times 10 7g 965 times 104C D 548 times 10 7Kg 965 times 104C

    The mass and charge of one mole of electrons, respectively is:

    (A) 54.8× 10 −7 54.8×10−7 Kg, 9.65× 10 4 9.65×104 C (B) 5.48× 10 −7 5.48×10−7 Kg, 9.65× 10 3 9.65×103 C (C) 5.48× 10 −7 5.48×10−7 g, 9.65× 10 4 9.65×104 C (D) 5.48× 10 −7 5.48×10−7 Kg, 9.65× 10 4 9.65×104 C Answer Verified 152.9k+ views 4 likes

    Hint: We know that 1 mole of any substance will have

    6.02× 10 23 6.02×1023

    units (Avogadro number) of that substance. Also the charge of 1 electron is

    1.6× 10 −19 1.6×10−19

    C and the mass of 1 electron is

    9.1× 10 −31 9.1×10−31

    Kg. So, to find the charge and mass of 1 mole of electrons, find the product of the number of electrons present in 1 mole and the mass/charge of 1 electron.

    Complete step by step answer:

    -Let us start by just writing down the charge and mass of 1 electron.

    The charge of 1 electron is

    1.6× 10 −19 1.6×10−19

    C and the mass of 1 electron is

    9.1× 10 −31 9.1×10−31 Kg.

    -We know that 1 mole of any substance has

    6.02× 10 23 6.02×1023

    units (Avogadro number) of that substance. Hence we can say that when we say 1 mole of electrons we are referring to

    6.02× 10 23 6.02×1023 electrons.

    -Now, we will calculate the mass of 1 mole of electrons.

    Mass of 1 electron =

    9.1× 10 −31 9.1×10−31 Kg

    Number of electrons in 1 mole =

    6.02× 10 23 6.02×1023

    Therefore the mass of 1 mole of electrons =

    9.1× 10 −31 ×6.02× 10 23 9.1×10−31×6.02×1023 Kg = 5.48× 10 −7 5.48×10−7 Kg

    Hence the mass of 1 mole electron of electrons is

    5.48× 10 −7 5.48×10−7 Kg.

    -Now, we will calculate the charge of 1 mole electrons.

    Charge of 1 electron =

    1.6× 10 −19 1.6×10−19 C

    Number of electrons in 1 mole =

    6.02× 10 23 6.02×1023

    Therefore the charge of 1 mole of electrons =

    1.6× 10 −19 ×6.02× 10 23 1.6×10−19×6.02×1023 C = 9.65× 10 4 9.65×104 C

    Hence the charge of 1 mole of electrons will be

    9.65× 10 4 9.65×104 C.

    So, the correct answer is “Option D”.Note: We all know that there exist three types of particles which constitute an atom: electron, proton and neutron. A proton has a charge equal in magnitude with the electron but with opposite charge and is equal to =

    +1.6× 10 −19 +1.6×10−19

    C while the charge of an electron is =

    −1.6× 10 −19 −1.6×10−19

    C. A neutron is a neutral atom with 0 charge. Remember that this charge is always in units of Coulomb (C) and the mass we take here is in Kg (kilogram).

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