A gas mixture contains 82% (w/w) methane, CH4, and 18% (w/w) ethane, CH. If a 15.50 g sample of the gas mixture is placed in a 15-L container at
20.0°C, calculate
(1)
the total moles of gases,
(ii) the total pressure (atm) and
(iii)
the partial pressure of each gas in the container.
[7 marks

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Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.