The measurement 700 ml contains three significant figures.
Here’s the explanation:
- In significant figures, all non-zero digits are considered significant. This means that the digits 7 and 0 are significant.
- The zeros that appear at the end of a number with a decimal point (like in 700.0 ml) are also counted as significant. However, since there is no decimal point present in the number 700 ml, the last zero is not deemed significant by the standard rules of significant figures.
- Thus, in the case of 700 ml, both the ‘7’ and the zeros following it do not alter the precision of the estimated value in this format, thereby leading to 3 significant figures.