Final answer:
The density of an object with a mass of 50g and a volume of 2.5 cm³ is calculated by dividing the mass by the volume, yielding a density of 20 g/cm³.
Step-by-step explanation:
To find the density of an object we use the formula:
Density = Mass / Volume
With the given mass of 50g and a volume of 2.5 cm³, we can calculate the density as follows:
Density = 50g / 2.5 cm³ = 20 g/cm³
Therefore, the correct answer for the density of the object is 20 g/cm³, which corresponds to option A. 20 g/cm³.