Question

Density Questions?
1. What is the volume of a sample of helium that
has a mass of 1.34 × 10^−3 g, and a density of
0.17847 g/L?
Answer in units of mL

2. What is the density of a piece of metal that
has a mass of 8.52 × 105 g and is 92 cm ×
48.8 cm × 97.7 cm?
Answer in units of g/cm^3

3. The density of gold is 19.3 g/cm^3. What is
the volume of a sample of gold with mass
1.709 kg?
Answer in units of cm3

4. If this sample of gold is a cube, how long is
each edge?
Answer in units of cm

Answer 1

Density = mass/volume

Answer 2

1.
(1.34 × 10^−3 g) / ( 0.17847 g/L) = 0.00751 L = 7.51 mL

2.
(8.52 × 10^5 g) / (92 cm × 48.8 cm × 97.7 cm) = 1.94 g/cm^3

3.
(1709 g) / (19.3 g/cm^3) = 88.5 cm^3

4. Take the cube root of the answer in 3:
4.46 cm