CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

(a) Calculate the number of electrons which will together weigh one gram.

(b) Calculate the mass and charge of one mole of electrons.

Open in App
Solution

(a) Mass of one electron = 9.10939×1031 kg
∴ \therefore Number of electrons that weigh 9.10939×1031 kg = 1
∴ \therefore Number of electrons that will weigh 1 g (1 × 103 kg) =19.10939×1031kg×(1×1031kg)=0.1098×103+31=0.1098×1028Numberofelectronswhichwillweigh1gram=1.098×1027

(b) Mass of one electron = 9.10939×1031 kg
Mass of one mole of electron = 6.022×1023×9.10939×1031 kg = 5.48×107 kg
(c) Charge on one electron = 1.6022×1019 coulomb
Charge on one mole of electron = 1.6022×1019 C 6.022×10236.022 \times 10^{23} 6.022×1023 = 9.65×104 9.65 \times 10^{4 } 9.65×104C


flag
Suggest Corrections
thumbs-up
31
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon