Question

Как измениться внутренняя энергия 3 молей неона при понижении температуры от 40 °С до 80 °С? ​

Answer 1

Ответ:

Объяснение:

Дано: Формула:

v=3моль U=3/2vR(T1-T2)

Т1= 40 С+273=313 К [U]=моль* Дж*К/

Т2= -80 С+273=193 К /моль *К=Дж

U= ?

Решение:

U=3/2*3*8,31*(193-313)=-4487,4 Дж

Answer 2

Changing the Internal Energy of Neon

To determine how the internal energy of 3 moles of neon changes when the temperature is lowered from 40 °C to 80 °C, we need to consider the relationship between temperature and internal energy.

Internal energy refers to the total energy of a system, including both its kinetic and potential energy. It is influenced by factors such as temperature, pressure, and the number of particles in the system.

According to the ideal gas law, the internal energy of an ideal gas depends only on its temperature. The internal energy of an ideal gas can be expressed as:

U = (3/2) * n * R * T

Where: - U is the internal energy - n is the number of moles of the gas (in this case, 3 moles of neon) - R is the ideal gas constant (approximately 8.314 J/(mol·K)) - T is the temperature in Kelvin

To calculate the change in internal energy, we can subtract the initial internal energy from the final internal energy:

ΔU = U_final - U_initial

Let's convert the temperatures from Celsius to Kelvin and calculate the change in internal energy.

Initial temperature: 40 °C = 313.15 K Final temperature: 80 °C = 353.15 K

Using the formula above, we can calculate the initial and final internal energies:

Initial internal energy (U_initial) = (3/2) * 3 * 8.314 * 313.15 Final internal energy (U_final) = (3/2) * 3 * 8.314 * 353.15

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

ΔU = U_final - U_initial

Note: Unfortunately, I couldn't find specific search snippets to directly cite the formula for calculating the internal energy of an ideal gas. However, this formula is a well-known equation in thermodynamics and can be found in many textbooks and online resources.

Please give me a moment to perform the calculations.