the concentration of mercury in a polluted lake is 0.543 micrograms per liter of water. What...
If the concentration of mercury in the water of a polluted lake is 0.33 ug per liter of water, what is the total mass of mercury in the lake, in kilograms? The lake has a surface area of 10.0km2 and an average depth of 15m.
If the concentration of mercury in the water of a polluted lake is 0.33 µg/L of water, what is the total mass of mercury in the lake, in kilograms, if the lake has a surface area of 10.7 mi2 and an average depth of 45 feet? (Hint: get the volume of the lake first.)
a)What is the change in length in millimeters of a 3.00-cm-long column of mercury if its temperature changes from 30.0°C to 46.0°C, assuming the mercury is unconstrained lengthwise? mm b)Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. To get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.25 km high...
1. In 1970, the total phosphorus (TP) load to Lake Erie was 18.150 tonnes/year (where tonnes or metric ton = 1,000 kg). The surface area, volume, and outflow from Lake Erie are given as 25.2 x 10 m² 468 x 10 m, and 182 x 10 m yr, respectively. Based on previous evaluations, the total phosphorus is removed from the lake with an apparent settling rate of 16 m/yr. a. Draw a diagram and write the mass balance equation for...
30 Using the following equation determine the average concentration (moles per liter) of acetic acid (CH,CO,H) present in your vinegar. Record the concentration in Data Table 2 average volume of NaOH (mL) X 1L NAOH 1000 mL NAOH 0,5 mol NaOH 1. NaOH 1 mol CH4COH 1 mol NaOH = average moles of CH,CO,H average moles of CH,CO,H 5.0 ml, vinegar 1000 ml IL = Concentration of CH.CO, H (M=mol/L) 31 Using the following equation and your result from Step...
Data Table 2: Water Hardness Average Volume of EDTA Used (mL) Concentration Ca2+ Ions Per Liter of Water (mol/L) Water Hardness (ppm CaCO3) 3.33 mL 0.00333 mol/L 333.2 ppm Exercise 1 - Questions 1. Based on the analysis of your local water, would you classify its hardness as soft, moderate, hard, or very hard? Explain your answer. 2. Approximately how much calcium would you ingest by drinking eight 8-oz glasses of your local water? Hint: 1 oz (fluid ounce) =...
3. A FWS constructed wetland is being designed to polish grey water from a school building in Indiana. The grey water characteristics are 80 mg/L BOD, 20 mg/L TSS and 10 mg/L nitrogen (as ammonia nitrogen). They would like their constructed wetland to reduce their BOD to 15 mg/L before the water exits the wetland. No treatment objectives are required for TSS, nitrogen or pathogens in the wetland. Decaying plant matter provides a background BOD concentration (C*) of 7 mg/L....
A FWS constructed wetland is being designed to polish grey water from a school building in Indiana. The grey water characteristics are 80 mg/L BOD, 20 mg/L TSS and 10 mg/L nitrogen (as ammonia nitrogen). They would like their constructed wetland to reduce their BOD to 15 mg/L before the water exits the wetland. No treatment objectives are required for TSS, nitrogen or pathogens in the wetland. Decaying plant matter provides a background BOD concentration (C*) of 7 mg/L. Assume...
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic quantities involved in the process are shown in the following table. Action Enthalpy separation of solute 11.5 kJ/mol separation of solvent 21.8 kJ/mol formation of solute-solvent interactions -86.7 kJ/mol solute...
What are the Solutions to Part B of Chapter 2 of Tillery Physics 9th edition.......kinda pointless for you guys to only have the solutions that the book has already. 1. What was the average speed in km/h of a car that travels 400.0 km in 4.5 h? 2. What was the average speed in km/h of a boat that moves 15.0 km across a lake in 45 min? 3. How much would a 80.0 kg person weigh (a) on Mars,...