The viscosity (η) of a gas depends on its mass, effective diameter, and average molecular velocity of the gas. Estimate the effective diameter of the methane molecule (CH4) if the η value for helium is ηHe = 2.0 × 10−5 kg / ms and methane is ηCH4 = 1.1 × 10−5 kg / ms at room temperature, and the effective diameter helium is dHe = 2.1 × 10−10 m!A. 2 x 10-8 mB. 4 x 10-10 mC. 2 x 10-10 mD. 4 x 10-8 m HA108.70 pmH.

viscosity of helium = 2 * 10-5 kg/ms viscosity of methane = 1.1 * 10-5 kg/ms effective diameter of…

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Physics for Scientists and Engineers: Foundations and Connections

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ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

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The viscosity (η) of a gas depends on its mass, effective diameter, and average molecular velocity of the gas. Estimate the effective diameter of the methane molecule (CH₄) if the η value for helium is ηHe = 2.0 × 10⁻⁵ kg / ms and methane is ηCH₄ = 1.1 × 10⁻⁵ kg / ms at room temperature, and the effective diameter helium is dHe = 2.1 × 10⁻¹⁰ m!

A. 2 x 10^-8 m

B. 4 x 10^-10 m

C. 2 x 10^-10 m

D. 4 x 10^-8 m

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