Calculate the mass of oxygen under normal conditions with a volume of 11.2 dm3, calculate the mass

univerkov | September 12, 2021 | education

Calculate the mass of oxygen under normal conditions with a volume of 11.2 dm3, calculate the mass of oxygen under normal conditions with a volume of 11.2 dm3.

To find out the mass of taken oxygen at standard conditions, consider the equality: m / MO2 = ν (amount of substance O2) = V / Vm, from where we express: m = MO2 * V / Vm.

Const: MO2 – molar mass of oxygen (MO2 = 32 * 10-3 kg / mol); Vm – molar volume (Vm = 22.4 l / mol).

Data: V is the volume of taken oxygen (V = 11.2 dm3 = 11.2 l).

Let’s calculate: m = MO2 * V / Vm = 32 * 10-3 * 11.2 / 22.4 = 16 * 10-3 kg.

Answer: Under n.u. the mass of taken oxygen will be equal to 16 g.

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