Question

The mass of a piece of metal is 1200g A measuring cylinder contains 150cm3 of water. The piece of metal is

put into the measuring cylinder. The water level rises to 250cm3 and covers the metal,
What is the density of the metal?​

Answer 1

The density of the metal is
`12\ gr/cm^3`

Step-by-step explanation:

Density

The density of a substance is the mass per unit volume. The density varies with temperature and pressure.

The formula to calculate the density of a substance of mass (m) and volume (V) is:

`\displaystyle \rho=(m)/(V)`

The piece of metal has a mass of m=1200 gr. When the piece of metal is submerged in a measuring cylinder, the water level rises from 150 cm3 to 250 cm3. This means the piece of metal occupies a volume of V=250 cm3-150 cm3=100 cm3.

The density is:

`\displaystyle \rho=(1200)/(100)`

`\rho=12\ gr/cm^3`

The density of the metal is
`\mathbf{12\ gr/cm^3}`