## Using masses of protons, neutrons, and electrons

claudia_1h
Posts: 111
Joined: Fri Aug 09, 2019 12:16 am

### Using masses of protons, neutrons, and electrons

I've noticed that several homework problems require the use of the numerical masses of protons, neutrons, and electrons. Do we need to memorize these values or would they be given on a test?

AKatukota
Posts: 100
Joined: Thu Jul 25, 2019 12:18 am

### Re: Using masses of protons, neutrons, and electrons

It seems that we would probably be given these values or they would be found on some sort of reference table. But it also would not be a bad idea to know their general values.

Rachel Yu 1G
Posts: 113
Joined: Fri Aug 09, 2019 12:15 am

### Re: Using masses of protons, neutrons, and electrons

If it's needed for a test then the amount should be on the formula sheet. Otherwise, I don't think we'd be tested with a question that required us to memorize the mass of protons, neutron, and electrons. Also, these values are given on the back of the hardcover textbook along with a lot of other formulas/constants.

Natalie Nartz 4F
Posts: 50
Joined: Thu Jul 11, 2019 12:17 am

### Re: Using masses of protons, neutrons, and electrons

I don't think we'll have to memorize them. But, the masses of each are as follows

electron: 9.11*10^-31 kg
proton: 1.675*10^-27 kg
neutron: 1.673*10^-27 kg

Lauren Tanaka 1A
Posts: 109
Joined: Sat Aug 17, 2019 12:18 am

### Re: Using masses of protons, neutrons, and electrons

I went to one of the UA sessions and they gave us a constants and equations sheet for practice problems. On that sheet was the masses of protons, neutrons, and electrons so I'm assuming that we don't need to know these values.

Donna Nguyen 2L
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

### Re: Using masses of protons, neutrons, and electrons

We probably don't need to memorize the masses. If anything, I think we would need to know the mass of an electron since it seems to be the most commonly used, but I don't think we'll need to memorize it.

Anvi Brahmbhatt 4A
Posts: 51
Joined: Wed Sep 18, 2019 12:21 am

### Re: Using masses of protons, neutrons, and electrons

I don't think we need to memorize the values. Many values are already provided on the formula sheet. However, try to know their masses relative to each other.