Question

Какова температура гелия массой 8г,если его внутренняя энергия равна 15 кДж? Гелий считать идеальным газом. Молярная масса гелия равна 4*10^(-3) кг/моль.Варианты ответов.1 )900К2 )300К3 )600К 4 )800К

Answer 1

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Answer 2

Calculation of Temperature of Helium

To calculate the temperature of helium with a mass of 8g and an internal energy of 15 kJ, we can use the equation:

Internal Energy = (3/2) * n * R * T

Where: - Internal Energy is given as 15 kJ - n is the number of moles of helium - R is the gas constant - T is the temperature in Kelvin

First, we need to calculate the number of moles of helium using its mass and molar mass.

Number of Moles = Mass / Molar Mass

Given: - Mass of helium = 8g - Molar mass of helium = 4 * 10^(-3) kg/mol

Let's calculate the number of moles:

Number of Moles = 8g / (4 * 10^(-3) kg/mol)

Now, we can substitute the values into the equation to find the temperature:

15 kJ = (3/2) * (8g / (4 * 10^(-3) kg/mol)) * R * T

To find the temperature, we need to know the value of the gas constant, R. The value of R depends on the units used for pressure and volume. Since the problem does not provide information about pressure or volume, we cannot calculate the exact temperature.

Therefore, without additional information, we cannot determine the temperature of helium with the given data.

Please provide more information or clarify the problem statement if possible.