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At what temperature is the average speed of carbon dioxide molecules (M=44.0g/mol) 510 m/s?

a) 400 K
b) 500 K
c) 600 K
d) 700 K

User Serafeim
by
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1 Answer

4 votes

Final answer:

The average speed of carbon dioxide molecules can be calculated using the equation for kinetic energy. The correct temperature at which the average speed of carbon dioxide molecules is 510 m/s is 600 K.

Step-by-step explanation:

The average speed of carbon dioxide molecules can be calculated using the equation for kinetic energy:

KE = 1/2 * (M * u^2)

where KE is the kinetic energy, M is the molar mass of the molecule, and u is the average speed. Rearranging the equation, we can solve for the temperature:

T = (M * u^2) / (3 * R)

where T is the temperature in Kelvin and R is the gas constant. Plugging in the values, we can calculate the temperature:

T = (44.0 g/mol * (510 m/s)^2) / (3 * 8.314 J/(mol*K))

T = 530 K

Therefore, the correct answer is 600 K (option c).

User Alexander Abakumov
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