With isobaric heating of a certain mass of oxygen at delta T = 160 K, a work of 8.31 J was performed to increase its volume

| June 19, 2021 | education

With isobaric heating of a certain mass of oxygen at delta T = 160 K, a work of 8.31 J was performed to increase its volume. Determine the mass of oxygen if M = 3.2 * 10 ^ -2 kg / mol R = 8.31 J / (K * mol)

Data: P (oxygen pressure) = const; ΔT – change (increase) in temperature during heating (ΔT = 160 K); A – perfect work (A = 8.31 J).

Const (according to the condition): R – univers. gas constant (R = 8.31 J / (mol * K)); MO2 – solar mass (MO2 = 3.2 * 10 ^ -2 kg / mol).

To find out the mass of isobarically heated oxygen, consider the formula: A = mх * R * ΔT / MO2, from where we express: mх = A * MO2 / (R * ΔT).

Let’s perform the calculation: mx = A * MO2 / (R * ΔT) = 8.31 * 3.2 * 10 ^ -2 / (8.31 * 160) = 2 * 10 ^ -4 kg.

Answer: The mass of isobarically heated oxygen is 200 mg.



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