My problem states the mass of the electron is 9.10939 x10-31kg. It wants me to express the mass of the electron to 1, 2, 3, and 4 significant figures. I don't need just the answer but an explaination on how to arrive at the answer.

Answer 1

OK. Thanks for typing the WHOLE question. This makes sense.
One s.f.
9
Two s.f.
9.1
Three s.f.
9.11
Four s.f.
9.109
Five s.f.
9.1094
Six s.f.
9.10938
All have the x 10^-31 kg following the number. Do you see how this was done.
Here is a site to give you some reading about s.f.
http://www.chemteam.info/SigFigs/SigFigs.html