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Q 3123823741.     (i) Why air is dense at the sea level? Explain.
(ii) Calculate the total pressure in a mixture
of `4 g` of `O_ 2` and `2 g` of `H_2` confined
to a total volume of `1 L` at `0^o C`
(`R = 0.0821 L atm mol^(-1) `).
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)