Due

Week $1.$ Solids Lab In$-$Class Assignment

Each student should solve each of the following problems and turn them in on engineering paper.

Several years ago a student tested a water sample for solids from the lake behind his house. Below are his experimental results. From these results, calculate concentration $($in $m\frac{g}{L})$ of each of the nine types of solids.

$20\mathrm{.}00$ mL of unfiltered sample was placed in a pan. Below are data to use to determine the Total Solids, Total Volatile Solids, and Total Non$-$Volatile Solids concentrations.

Tare $($dry$)$ mass of evaporating pan $=22\mathrm{.}6588g$

Mass of evaporating pan plus residue after evaporation at $105C=22\mathrm{.}6732g$

Mass of evaporating pan plus residue after ignition at $550C=22\mathrm{.}6664g$

$24\mathrm{.}00$ mL of sample was filtered. Below are data to use to determine the Total Suspended Solids, Volatile Suspended Solids, Non$-$Volatile Suspended Solids concentrations.

Tare mass of filters $=1\mathrm{.}5392g$

Mass of the filter and residue after drying at $105C=1\mathrm{.}5440g$

Mass of the filter and residue after ignition at $550C=1\mathrm{.}5408g$

$20\mathrm{.}00$ mL of sample that had passed through the filter was placed in a pan. Below are data to use to determine the Total Dissolved Solids, Volatile Dissolved Solids, and Non$-$Volatile Dissolved Solids concentration.

Tare $($dry$)$ mass of evaporating pan $=22\mathrm{.}6677g$

Mass of evaporating pan plus residue after evaporation at $105C=22\mathrm{.}6773g$

Mass of evaporating pan plus residue after ignition at $550C=22\mathrm{.}6737g$