## Info

[Co] gram equivalents per liter, geq/m Qo cubic meters per second, m /s n dimensionless m dimensionless

Now, with all the units known, it is easy to substitute the values into the equation; the proper unit of the answer will simply fall into place.

The values can be substituted into the equation in two ways: direct substitution and indirect substitution. Direct substitution means substituting the values directly into the equation and making the conversion into proper units while already substituted. Indirect substitution, on the other hand, means converting the values into their proper units outside the equation before inserting them into the equation. These methods will be elaborated in the next example.

Example 3 In the equation I = 96-494[CM6.n(m-:2-, the following values for the factors are given: [Co] = 4000 mg/L of NaCl; Qo = 378.51 m3/d; n = 0.77, m = 400, and M = 0.90. Calculate the value of I by indirect substitution and by direct substitution.

Solution: Indirect substitution: In indirect substitution, all terms must be in their proper units before making the substitution, thus:

NaCl = 23 + 35.45 = 58.45, molecular mass of sodium chloride Therefore,

## How To Bolster Your Immune System

All Natural Immune Boosters Proven To Fight Infection, Disease And More. Discover A Natural, Safe Effective Way To Boost Your Immune System Using Ingredients From Your Kitchen Cupboard. The only common sense, no holds barred guide to hit the market today no gimmicks, no pills, just old fashioned common sense remedies to cure colds, influenza, viral infections and more.

Get My Free Audio Book