Question

what is the density of the object, reported to two significant figures?
\frac{16.400\\ g}{9.1\\ ml} = ? \frac{g}{ml}

Explanation:

Step1: Calculate raw density value

$\frac{16.400}{9.1} \approx 1.802198$

Step2: Round to 2 significant figures

Round $1.802198$ to 2 sig figs

Answer:

$1.8\ \frac{\text{g}}{\text{mL}}$