The rms speed of a certain sample of carbon dioxide molecules, with a molecular weight of 44 g/mole, is 396 m/s. What is the rms speed of water molecules, with a molecular weight of 18 g/mol, at the same temperature?

A)

253 m/s

B)

387 m/s

C)

421 m/s

D)

506 m/s

E)

619 m/s


E

Physics & Space Science

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What will be an ideal response?

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One phenomenon that demonstrates the particle nature of light is:

a. the photoelectric effect. b. diffraction effects. c. interference effects. d. the prediction by Maxwell's electromagnetic theory.

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A. 1.22 × 10-12 m B. 2.42 × 10-12 m C. 3.65 × 10-12 m D. 4.85 × 10-12 m

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