Problem: Round off the following quantities to the number of significant figures indicated in parentheses.70.427 g (3)

FREE Expert Solution

In this problem, we are asked to round off 70.427 into 3 significant numbers.


Recall that in determining the number of significant numbers, we following the following rules:

  • All nonzero digits are significant.
  • Zeroes between nonzero digits are significant.
  • Zeroes to the left of the nonzero digits are not significant, their only purpose is to indicate placement.
  • Zeroes to the right of the nonzero digits are categorized as follows:
    • Trailing zeroes after a decimal point are significant.
    • Trailing zeroes before the decimal point and after a nonzero digit are always significant.
    • Trailing zeroes before an implied decimal point is ambiguous and should be avoided by using scientific notation.
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Problem Details

Round off the following quantities to the number of significant figures indicated in parentheses.

70.427 g (3)

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Significant Figures concept. You can view video lessons to learn Significant Figures. Or if you need more Significant Figures practice, you can also practice Significant Figures practice problems.