Question

Mass

density
volume
2.23 kg of oxygen gas has a volume of 1.56 x 106 cm³.
Calculate the density of the oxygen gas in g/cm³.
Give your answer in standard form to 3 significant figures.

Answer 1

density = 1.43 × 10⁻³ g/cm³

Explanation:

We are told that oxygen gas of mass 2.23 kg has a volume of 1.56 × 10⁶ cm³, and we are told to find its density in g/cm³.

To do this we have to first convert the mass, which is given in kg, to g:

mass = 2.23 kg = 2.23 kg × 1000
`\mathrm{_(g)/(kg)}`

= 2230 g

Next, we can find the density of the gas using the following formula:

`\boxed{density = (mass)/(volume)}`

⇒ density =
`\mathrm{(2230 \ g)/(1.56 * 10^(6) \ cm^3)}`

= 1.43 × 10⁻³ g/cm³

Therefore, the density of the oxygen gas is 1.43 × 10⁻³ g/cm³.