. We wish to prepare a multi?purpose cold symptom remedy. This will contain an a

Question

. We wish to prepare a multi?purpose cold symptom remedy. This will contain an analgesic (A), a decongestant (D), a cough suppressant (C) and an antihistamine (H). This will be prepared by blending four other products that we make that are mixtures of the different species. Their mass fractions are in the table below.

We wish to produce 100 kg/min of a blend that is 5% A, 15% D, 10% C and 10% H (by mass), with the remainder as water. Calculate the flow rates of the different mixtures required as well as the rate at which water must be added to or removed from this mixture.

Explanation / Answer

The flow rate should be

A : 5Kg / min

D: 15Kg /min

C: 10Kg / min

H:10Kg/ min

Water: 60Kg / min

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