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Carry out the following operations and express the ansiver with the appropriate number of and units: (a) (5.231mm)(6.1mm), (b) 72.3g/1.5mL, (c) 12.21g+0.0132g, and (d) 31.03g+12mg. 3. Drug medications are often prescribed on the basis of body mass. The adult dosage of Elixophyllin, a drug used to treat asthma, is 6mg/kg of body mass. Calculate the dose in milligrams for a 160lb person. 4. A man who is 5ft10in. tall weighs 160.lb. What is his height in centimeters and his mass in kilograms? 5. Determine the boiling point of water at 672mmHg