Final answer:
To calculate the glass cube's volume, divide the mass (300 g) by the density (2.5 g/cm³), which results in a volume of 120 cm³.
Step-by-step explanation:
The question asks us to calculate the volume of a glass cube given its mass and density. We can use the formula Density = Mass/Volume, which can be rearranged to Volume = Mass/Density in order to solve for the volume. With the glass cube's mass being 300 g and its density being 2.5 g/cm³, the calculation would be Volume = 300 g / 2.5 g/cm³.
Performing the division gives us a volume of 120 cm³ for the glass cube. This is determined by dividing the mass of the glass cube by its density.