The average kinetic energy of a gas at $-23°C$ and $75\, cm$ pressure is $5 \times {10^{ - 14}}\,erg$ for ${H_2}$. The mean kinetic energy of the ${O_2}$ at $227°C$ and $150\, cm$ pressure will be
  • A$80 \times {10^{ - 14}}\,erg$
  • B$20 \times {10^{ - 14}}\,erg$
  • C$40 \times {10^{ - 14}}\,erg$
  • D$10 \times {10^{ - 14}}\,erg$
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