Question

the 14.7 g sample of graphite takes up a volume of 6.6 cm³. what is the density of graphite? ? g/cm³ round your answer to the tenths place.

Explanation:

Step1: Recall density formula

Density ($
ho$) is defined as mass ($m$) divided by volume ($V$), so the formula is $
ho = \frac{m}{V}$.

Step2: Substitute values

We know the mass $m = 14.7\ \text{g}$ and the volume $V = 6.6\ \text{cm}^3$. Substitute these into the formula: $
ho = \frac{14.7}{6.6}$.

Step3: Calculate the division

$\frac{14.7}{6.6} \approx 2.227$.

Step4: Round to tenths place

Rounding $2.227$ to the tenths place (one decimal place), we look at the hundredths digit (2), which is less than 5, so we keep the tenths digit as is. So it rounds to $2.2$.

Answer:

$2.2$