What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ?
A. 2/3
B. 1/3
C. 1/2
D. 1/3 × (298/273)
A. 2/3
B. 1/3
C. 1/2
D. 1/3 × (298/273)