How many significant figures are in the measurement 811.40 grams?

1 Answer
Stefan V. · Oscar L.
Aug 6, 2016

55

Explanation:

In order to be able to say how many sig figs are used for the measurement "811.40 g"811.40 g, you need to know that

  • non-zero digits are always significant
  • a trailing zero that follows a decimal point and a non-zero digit is always significant

In your case, the measurement

color(blue)(811).color(blue)(4)color(red)(0)811.40

has four non-zero digits and one significant trailing zero.

color(blue)(8, 1, 1, 4) ->8,1,1,4→ non-zero digits

color(white)(8,1,1,)color(red)(0) ->8,1,1,0→ significant trailing zero

Therefore, you can say that this measurement has five significant figures

811.40 ->811.40→ five significant figures

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