Question

A cube of plastic 1.2x10^-5 km on a side has a mass of 1.1 g. what is its density in g/cm^3

Answer 1

length of 1 side 1.2*10^-5km =1.2*10^-5*10^5 =1.2cm

volume of the cube (1.2)^3=1.728 cm^3

density= mass/volume= 1.1/1.728=0.636 g/cm^3

Answer 2

`0.6366  g/cm^3` is the density of the cubic plastic.

Step-by-step explanation:

Mass of the cubic block= m = 1.1 g

Volume of the cubic block = V

Volume of the cube =
`a^3`

a = side length =
`1.2* 10^(-5) km = 1.2 cm`

1 km = 100,000 cm

Volume of cubic block =
`V=(12 cm)^3=1.728 cm^3`

Density of the solid block,d = ?

`Density=(Mass)/(Volume)`

`d=(m)/(V)=(1.1 g)/(1.728 cm^3)=0.6366 g/cm^3`

`0.6366 g/cm^3` is the density of the cubic plastic.