Question

Определите давление внутренней энергии кислорода массой 3кг при изменении его температуры от 17°С до 27°С

Answer 1

Calculation of Internal Energy Change

To determine the change in internal energy of oxygen, we can use the formula:

ΔU = m * c * ΔT

Where: - ΔU is the change in internal energy - m is the mass of the oxygen (3 kg) - c is the specific heat capacity of oxygen - ΔT is the change in temperature (from 17°C to 27°C)

To find the specific heat capacity of oxygen, we can refer to reliable sources. Unfortunately, the search results provided do not contain the specific heat capacity of oxygen. However, we can assume that the specific heat capacity of oxygen is approximately 0.92 J/g°C.

Using this assumption, we can calculate the change in internal energy of oxygen.

Calculation:

Given: - Mass of oxygen (m) = 3 kg - Change in temperature (ΔT) = 27°C - 17°C = 10°C - Specific heat capacity of oxygen (c) ≈ 0.92 J/g°C

Converting the mass of oxygen from kg to grams: - Mass of oxygen (m) = 3 kg * 1000 g/kg = 3000 g

Calculating the change in internal energy: - ΔU = m * c * ΔT - ΔU = 3000 g * 0.92 J/g°C * 10°C

Now, let's calculate the change in internal energy:

ΔU = 3000 g * 0.92 J/g°C * 10°C = 27,600 J

Therefore, the change in internal energy of oxygen with a mass of 3 kg and a temperature change from 17°C to 27°C is 27,600 Joules (J).

Please note that the specific heat capacity of oxygen may vary slightly depending on the conditions, but the assumed value of 0.92 J/g°C provides a reasonable estimate for this calculation.