Which of the following statements is incorrec | vedclass

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(A) The Avogadro number is defined as $6.022 	imes 10^{23} 	ext{ mol}^{-1}$.Option $A$ states it as $6.02 	imes 10^{21}$,which is incorrect.Option

Vedclass · Accepted Answer

Avogadro number = $6.02 	imes 10^{21}$

Vedclass · Answer

(A) The Avogadro number is defined as $6.022 	imes 10^{23} 	ext{ mol}^{-1}$.Option $A$ states it as $6.02 	imes 10^{21}$,which is incorrect.Option $B$ is correct as $\bar{\upsilon} = \sqrt{\frac{8RT}{\pi M}}$ and $u = \sqrt{\frac{3RT}{M}}$,so $\frac{\bar{\upsilon}}{u} = \sqrt{\frac{8}{3\pi}} \approx 0.9213$.Option $C$ is correct because the average kinetic energy of an ideal gas depends only on temperature ($KE = \frac{3}{2}RT$ for $1 	ext{ mole}$).Option $D$ is the standard formula for root mean square velocity.

Which of the following statements is incorrect?

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