A pure silver sphere has a radius of 0.886 cm. How many silver atoms does it contain? (volume of a sphere = 𝜋r3; density of silver = 10.5 g/cm3)
Radius of pure silver sphere = 0.886 cm
Density of silver = 10.5 g/cm3
volume of a sphere =
Number of silver atoms, the sphere contains = ?
First, let’s find the volume of the sphere :
= 2.914 cm3.
We have the density and volume, let’s calculate the mass of the silver using the density formula :
m = V
m = 30.59 g
Therefore the mass of the silver in the sphere is 30.59 g.