You have the following mass (in grams):
You need to remember the following information in order to determine the number of Significant Figures in the number given in the exercise:
- When a digit of a number is not necessary to indicate the precision of the number, it is considered a Non-Significant figure.
- When it is a Decimal number and it has Trailing zeros, they are considered Significant figures.
- The zeros between nonzeros digits are Significant Figures.
In this case, you can identify that the first nonzero digit in the number is 4 and there are four zeros on the left of that digit. Therefore, since they are not necessary (in terms of accuracy), you can determine that they are not Significant Figures.
Notice that there is a zero between nonzero digits. That zero is a Significant
Figure.
All the nonzero digits are Significant Figures.
Finally, since the number has a Decimal point, the last digit 0 is a Significant Figure.
Therefore, the answer is:
