Density Chemistry Example 1

Follow the full solution, then compare it with the other examples linked below.

Example 1

easy
A block of aluminum has a mass of 135135 g and a volume of 50.0โ€‰cm350.0\,\text{cm}^3. Calculate its density.

Solution

  1. 1
    Use the density formula ฯ=mV\rho = \frac{m}{V}.
  2. 2
    Substitute the given values: ฯ=135โ€‰g50.0โ€‰cm3\rho = \frac{135\,\text{g}}{50.0\,\text{cm}^3}.
  3. 3
    Evaluate the quotient to get ฯ=2.70โ€‰g/cm3\rho = 2.70\,\text{g/cm}^3.

Answer

ฯ=2.70โ€‰g/cm3\rho = 2.70\,\text{g/cm}^3
Density is an intensive property โ€” it does not depend on the amount of substance. Every sample of pure aluminum has the same density, making it useful for identification.

About Density

The mass of a substance per unit volume, measuring how tightly packed the particles are within a material.

Learn more about Density โ†’

More Density Examples

Example 2 medium

A piece of metal has a mass of [formula] g. When placed in a graduated cylinder containing [formula]

Example 3 easy

Will an object with density [formula] float or sink in water ([formula])?

Example 4 hard

A solid cube has a side length of [formula] and a mass of [formula]. Calculate its density. If the c

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