Final answer:
The density of the rock with a mass of 15 grams and a volume of 5 cm³ is 3 g/cm³.
Step-by-step explanation:
The student is asking about the density of a rock given its mass and volume. To find the density of the rock, we use the formula for density, which is Density (D) = Mass (m) divided by Volume (V). The mass of the rock is given as 15 grams and the volume is given as 5 cm³.
To calculate the density, we divide the mass by the volume:
D = m/V
D = 15 g / 5 cm³
D = 3 g/cm³
Therefore, the density of the rock is 3 grams per cubic centimeter.