If the concentration of mercury in the water of a polluted lake is 0.33 ug per...
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.
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If the concentration of mercury in the water of a polluted lake
is 0.33 ug per...
If the concentration of mercury in the water of a polluted lake is 0.33 µg/L of...
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.)
the concentration of mercury in a polluted lake is 0.543 micrograms per liter of water. What...
the concentration of mercury in a polluted lake is 0.543 micrograms per liter of water. What is the total mass of mercury in the lake, in kilograms, if the lake has a surface area of 27.70 km^2 and average depth of 46.0 m? assume like is a rectangular object (1 dm^3 = 1L)
A jar containing 3.1 kg of mercury is dropped into a lake that is 43,000 ft2and...
A jar containing 3.1 kg of mercury is dropped into a lake that is 43,000 ft2and has an average depth of 4.2 ft. Water flows into and out of the lake at 1.6 ft3/s maintaining a constant volume. Assuming the mercury completely dissolves (very poor assumption in reality) and that the lake is completely mixed, what is the mercury concentration in the lake (in mg/L) (a) immediately after the exposure and (b) 5 days later. (c) How long would it...
1. In 1970, the total phosphorus (TP) load to Lake Erie was 18.150 tonnes/year (where tonnes...
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...
Rocket Fuel in Drinking Water. Near Las Vegas, NV, improper disposal of perchlorates used to manufacture...
Rocket Fuel in Drinking Water. Near Las Vegas, NV, improper disposal of perchlorates used to manufacture rocket fuel has contaminated a stream that flows into Lake Mead, the largest artifical lake in the United States and a major supply of drinking and irrigation water for the American Southwest. The EPA has proposed an advisory range for perchlorate concentrations in drinking water of 4 to 18 micrograms/Liter. the perchlorate concentration in the stream averages 700 micrograms/ liter, and the stream flows...
Suppose a group of volunteers is planning to build a park near a local lake. The...
Suppose a group of volunteers is planning to build a park near a local lake. The lake is known to contain low levels of arsenic (As). Therefore, prior to starting construction, the group decides to measure the current level of arsenic in the lake. If a 13.9 cm3 sample of lake water is found to have 165.1 ng As, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the density of the lake...
Suppose a group of volunteers is planning to build a park near a local lake. The...
Suppose a group of volunteers is planning to build a park near a local lake. The lake is known to contain low levels of arsenic (As).(As). Therefore, prior to starting construction, the group decides to measure the current level of arsenic in the lake. If a 13.9 cm313.9 cm3 sample of lake water is found to have 166.7 ng As,166.7 ng As, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the density...
1) An analysis indicated that the concentration of mercury in a sample of drinking water was...
1) An analysis indicated that the concentration of mercury in a sample of drinking water was 0.680 parts per billion. What quantity of mercury (g) was present in 15.0 L of the water, the density of which is 0.998 g/ml? A) 6.82 B) 1.72 x 10-8 C) 6.07 x 10-3 D) 1.06 x 10-6 E) 3.45 x 10-4 F) 4.54 x 10-5 G) 1.02 x 10-5 2) Boron has two naturally occurring isotopes, Boron-10 (10.01293 amu), and Boron-11 (11.0093 amu),...
Crater Lake in Oregon is the deepest lake in the United States, with a maximum depth...
Crater Lake in Oregon is the deepest lake in the United States, with a maximum depth of 655 m. The density of freshwater is 1.00 ✕ 103 kg/m3. (a) If the air pressure above the lake, which has a surface altitude of 1800 m, is 8.00 ✕ 104 Pa, what is the absolute pressure at the bottom of the lake? (b) What is the force of the lake's water on each window of a submarine near the lake bottom if...
4.6781600 107 100 3x10-4 8. Some lake water is found to contain 5.00 ppm of methyl...
4.6781600 107 100 3x10-4 8. Some lake water is found to contain 5.00 ppm of methyl mercury, Hg(CH3)2. a) What is the concentration of methyl mercury in weight percent? moss. - 9 Pom - Mass Soule Hg(CH) 10 - 0 1 +1008x2)) x2 = 230.658, 50. S 330. 688 5 Solution 3.00 230.658 106 mais solution DI 5.00 106. 030.656 → mass soulion 230 Mats Solution 5.00 *10-6 b) Assuming the density of the lake water is 1.00 g/mL, what...
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...
1) An analysis indicated that the concentration of mercury in a sample of drinking water was 0.680 parts per billion. What quantity of mercury (g) was present in 15.0 L of the water, the density of which is 0.998 g/ml? A) 6.82 B) 1.72 x 10-8 C) 6.07 x 10-3 D) 1.06 x 10-6 E) 3.45 x 10-4 F) 4.54 x 10-5 G) 1.02 x 10-5 2) Boron has two naturally occurring isotopes, Boron-10 (10.01293 amu), and Boron-11 (11.0093 amu),...
4.6781600 107 100 3x10-4 8. Some lake water is found to contain 5.00 ppm of methyl mercury, Hg(CH3)2. a) What is the concentration of methyl mercury in weight percent? moss. - 9 Pom - Mass Soule Hg(CH) 10 - 0 1 +1008x2)) x2 = 230.658, 50. S 330. 688 5 Solution 3.00 230.658 106 mais solution DI 5.00 106. 030.656 → mass soulion 230 Mats Solution 5.00 *10-6 b) Assuming the density of the lake water is 1.00 g/mL, what...
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