(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

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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) ).

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