Make a rough estimate of the thermal conductivity of

Chapter 1, Problem 64P

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QUESTION:

Problem 64P

Make a rough estimate of the thermal conductivity of helium at room temperature. Discuss your result, explaining why it differs from the value for air.

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QUESTION:

Problem 64P

Make a rough estimate of the thermal conductivity of helium at room temperature. Discuss your result, explaining why it differs from the value for air.

ANSWER:

Step 1 of 5

The thermal conductivity of gas is given by

Also, we know that,

Hence the thermal conductivity becomes

Now using this equation we have to estimate the thermal conductivity of helium at room temperature. Then we have to discuss why the thermal conductivity of helium differs from the thermal conductivity of the air at the same temperature.

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