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.

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  1. OK. Thanks for typing the WHOLE question. This makes sense.
    One s.f.
    Two s.f.
    Three s.f.
    Four s.f.
    Five s.f.
    Six s.f.
    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.

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