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this is over significant digits.

-Indicate how many significant figures are in each of the following measurements:
e) 4.0 X 10-5 kg

i got 1 significant digit, but i'm not sure it if it's right... (& i can't ask my teacher, the situation is complicated)

  • chemistry -

    nope, the 0 tothe right of a decimal is significant. 2 sig digits.

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