The density of oxygen, O2 , under each of the following conditions:
STP 1.00 atm and 20.0°C is 1.78 g/L.
<h3>What is the density of a substance?</h3>
Density is the ratio of mass and volume of a substance.
The density of oxygen under the given conditions is calculated as follows:
STP = standard temperature and pressure.
standard pressure = 1 atm pressure
standard temperature = 25°C
Volume of 1 mole of a gas at STP = 22.4 L/mol
Thus, 1 mole of O2 occupies the volume , V = 22.4 L/mol
Volume of oxygen at 20°C is calculated using:
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 22.4 * 20/25
V₂ = 17.92
Hence;
density = 32 g/17.92
Density = 1.78 g/L
In conclusion, density is ratio of mass and volume.
Learn more about density at: brainly.com/question/952755
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