Final answer:
The density of the student's class ring is calculated using the formula density = mass/volume, giving 0.3439 g/mL, which is rounded to three significant figures as 0.344 g/mL based on the least precise measurement.
Step-by-step explanation:
The density of an object is calculated by dividing its mass by its volume. To find the density of the student's class ring, we use the formula:
density = mass/volume
From the given information, the mass of the ring is 9.322 g and the volume is 27.1 mL. Using the formula, we get:
density = 9.322 g / 27.1 mL
After performing the division, we obtain a density value of:
density = 0.3439 g/mL
The density should be reported with the appropriate number of significant figures. Since the mass measurement has four significant figures and the volume measurement has three, the density must be reported with three significant figures. Therefore, the density of the ring is:
0.344 g/mL
This calculation helps us relate the mass of the ring to its volume and understand the physical property of density, which is vital in material identification and applications.