We often hear that the true worth of a person is what others say about them. Well in Bob Millerâs case words like humble, passionate, eager, curious, honest, high integrity, a true friend, a strong supporter of youth, a family man, a hard worker, able to walk in anotherâs shoes, thinks of what is best for mankind,â¦..
A mass balance, also called a material balance, is an application of conservation of mass to the analysis of physical systems. By accounting for material entering and leaving a system, mass flows can be identified which might have been unknown, or difficult to measure without this technique.
This region is called the control volume. In our derivation of the mass balance equation, we have referred to the mass of pollutant in a lake and the fluxes of pollutant into and out of the lake---that is, we have used a lake as our control volume. Theoretically, any volume of any shape and location can be used.