Aspherical sample has a mass of 2.813g. it has a diameter of 8.0mm. what is the sphere made of (determined by its density as g/cm *3)

To determine the density, we use the following formula:



mass= 2.813 grams
volume= ?

we need to first calculate the volume before we can solve for the density. since the question states that the sample has a spherical shape, we can use the volume formula of spheres to find it.



radius (r)= = 

let's plug in the values

V= 

we need to change the to  using the following conversion

1 cm= 10 mm


now we can find the density. 

density= 2.813 grams/ 0.268 cm= 10.5 g/cm3