Calculating to the correct number of significant figures.
How do we properly round the result of this calculation?
\[423 ml \times \frac{23 g}{ml} \]Here is the calculator result:
\[423 ml \times \frac{23 g}{ml} = 9729 g \]423 has 3 significant figures and 23 has 2 significant figures, so we round to 2 significant figures ( the less precise measurement). Our answer is:
How do we properly round the result of this calculation?
\[0.0041 ml \times \frac{2.89 g}{ml} \]Here is the calculator result:
\[0.0041 ml \times \frac{2.89 g}{ml} = 0.011849 g \]0.0041 has 2 significant figures and 2.89 has 3 significant figures, so we round to 2 significant figures ( the less precise measurement). Our answer is: