Calculate the solubility in water (in milligrams per liter) of

(a) Air at 0.80 atm;

(b) He at 0.80 atm;

(c) He at 36 kPa. 

The temperature is 20°C in each case, and the pressures are partial pressures of the gases. Use the information in Table 5D.2.

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TABLE 5D.5 The Classification of Colloids* Dispersed phase solid liquid solid liquid gas solid liquid gas Dispersion medium gas gas liquid liquid liquid solid solid solid Technical name aerosol aerosol sol or gel emulsion foam solid dispersion solid emulsion solid foam Examples smoke hairspray, mist, fog printing ink, paint milk, mayonnaise fire-extinguisher foam ruby glass (Au in glass); some alloys bituminous road paving; ice cream insulating foam