Question:medium

Find the mass of oxygen gas with which $882\times10^{23}$ degrees of freedom are associated at N.T.P. Given: Molar mass of diatomic gas, oxygen is $32\text{ g mol}^{-1}$ and oxygen molecule possess three translational and two rotational degrees of freedom.

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Notice the arithmetic connection in the numbers: $12.044$ is exactly double Avogadro's constant factor $6.022$. Recognizing these numeric multiples early during long multiplication steps helps simplify fractions quickly and leads straight to $2\text{ g}$.
Updated On: May 16, 2026
  • $16\text{ g}$
  • $2\text{ g}$
  • $32\text{ g}$
  • $5\text{ g}$
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The Correct Option is B

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