Date: 2000-2001 - Revised August 2008
I am a 17 year old boy from Norway, currently working on my
homepage. It is about particle physics, so therefore I have a question.
What is the weight of a proton measured in kilograms?
H (hydrogen) has one proton and one electron. Its weight is primarily due
to its single proton. A proton is 1836 times heavier than an electron.
Since a mole of H2 (molecular hydrogen) weighs 2 grams and has 6.022 x
10E23 atoms (Avagadro number), then the weight of each hydrogen atom is
approximately 0.001 kg/6.022 x 10E23 = 1.6726E-27 kg.
Dr. Ali Khounsary
Advanced Photon Source
Argonne National Laboratory
Argonne, IL 60439
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