The total suspended solids for a wastewater sample was found to be 175 mg/l if the following test results were obtained, what size sample was used in the analysis? tare mass of gass fiber filter = residue on glass fiber filter after drying at 105°c = 1.5413 g 1.5538 g

Volume of the sample = 0.0714 L

Explanation:

Given:

Total Suspended Solids for a wastewater sample = 175 mg/L

Tare Mass of glass fiber filter = 1.5413 g

Residue on glass fiber filter after drying at 105°C = 1.5538 g

Now,

The mass collected on the filter

= Residue on glass fiber filter after drying - Tare Mass of glass fiber filter

= 1.5538 - 1.5413

= 0.0125 grams

= 0.0125 × 1000 = 12.5 mg

Also,

Concentration of the solids in water =

or

175 mg/L =

or

Volume of the sample =

or

Volume of the sample = 0.0714 L

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.