Asked by sue
Please help me with these two problems:
1)How many electrons would it take to equal the mass of a proton?
2)What mass of electrons would be required to just neutralize the charge of 1.0g of protons?
1)How many electrons would it take to equal the mass of a proton?
2)What mass of electrons would be required to just neutralize the charge of 1.0g of protons?
Answers
Answered by
DrBob222
Look up the mass of the proton. Look up the mass of the electron. Set up a proportion.
Divide Mp/Me = approximately 2000 since the proton is approximately 2000 times heavier than the electron.
The charge on the proton is about +1 and that of the electron is about -1 in arbitrary units. From the mass of the proton, calculate the number of protons in 1 gram. It will take that same number of electrons.
Divide Mp/Me = approximately 2000 since the proton is approximately 2000 times heavier than the electron.
The charge on the proton is about +1 and that of the electron is about -1 in arbitrary units. From the mass of the proton, calculate the number of protons in 1 gram. It will take that same number of electrons.
Answered by
sue
Thank You. I understood the first one, but I am having trouble setting up the second one. I don't know the conversion factor.
Answered by
DrBob222
You have your conversion factor. The mass of the proton is xx grams, whatever you looked up. So how many protons are there in 1 gram.
Look at it this way but we deal with B-Bs (you know, the pellet gun thing).
1 BB weighs 0.5 grams. How many BBs are in 1 gram of BBs. Same principle.
Look at it this way but we deal with B-Bs (you know, the pellet gun thing).
1 BB weighs 0.5 grams. How many BBs are in 1 gram of BBs. Same principle.
Answered by
jad
test
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