A river is contaminated with 0.65 mg/L of dichloroethyl-ene (C₂H₂Cl₂). What is the concentration (in ng/L) of dichloroethylene at 21C in the air breathed by a person swim-ming in the river (k(H) for C₂H₂Cl₂ in water is 0.033 mol/Latm)?

Q: 5. *A 5.00L of water sample is found to have a concentration of 0.000243 M in MgCO,. What is the…

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Q: What is the final concentration of HCl in a solution prepared by addition of 622.0 mL of 4.73 M HCl…

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Q: 75.  In Canada and the United Kingdom, devices that measure blood glucose levels provide a reading…

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Q: What is the concentration in ppm of selenium if 0.020 g is found in 5.0 × 103 kg of soil?

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Q: 3)Find the number of mg Na:CO: (FW = 106 g/mol) required to prepare 500 mL of 9.20 ppm Na solution.

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Q: A patient is given 2.0mL of a 3% (m/v) solution of C13H18ClNO; how many milligrams of C13H18ClNO did…

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Q: What is the concentration of AIF63- in 1.00 L of aqueous solution made with 34.9 mmole of Al(NO3)3…

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Q: A 134-mg sample of Na2CO3 is dissolved in H2O to give 1.45 L of solution. What is the concentration…

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Q: The maximum concentration set by the U.S. Environmen- tal Protection Agency for lead in drinking…

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Q: Consider the following reaction: 2 CN- + 5 ClO- + H2O --> N2 + 2 HCO3- + 5 Cl- How many Liters of…

A: Given, 2 CN- + 5 ClO- + H2O --> N2 + 2 HCO3- + 5 Cl-

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Q: 2) a) A 2.60 L sample of water contains 195.0 ug of lead. Calculate the concentration of lead in ppm…

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Q: The solubility of magnesium phosphate is 2.27 x 10g/1.0 L of solution. What is the Ksp for…

A: Given : Solubility of Mg3(PO4)2 = 2.27 x 10-3 g.L-1

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Q: A farmer recently dug a new well for his property. He sends a 14.0 mL sample of the well water to…

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Q: The Ksp for LaF3 is 2 * 10-19. What is the solubility of LaF3 in water in moles per liter?

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Q: ii) What is the concentration in ppb of lead in a chemical spill, if there is 0.030 mg in 1.6kg of…

A: Since you have posted multiple questions, we will answer only one question( the first one) for you.…

Q: What is the concentration in ppm of DDT for 4 x 10^-4 g in 2.0kg of fish tissue?

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Q: 6-ROX is a dye with a molecular weight of 631.67 g/mol. A student prepares a stock solution by…

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Q: In Canada and the United Kingdom, devices that measure blood glucose levels provide a reading in…

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Q: Dioxin is considered to be poisonous in concentrations above 2 ppb. If the lake containing 1 x 107 L…

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Q: 4. What is the percent (m/v) concentration of the solution obtained when 15.2 grams of nickel (II)…

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Q: OH and 0.20M NaCH3COO? !! II 12 2.

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Q: What volume of 0.10 M NAOH is required to neutralize 45.0 ml of 0.8M hydroiodic acid, HI? A. 36 mL…

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Q: What is the concentration in ppb of lead in a chemical spill, if there is 0.030 mg in 1.6kg of soil?

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A: The answers to the following questions are given as:

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Q: A Pasig river water sample was analyzed by the students and found to have 25.2 milligrams of lead in…

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Q: Will 0.5 g of CaSO4 be completely dissolved in 1 L of water? (Ksp = 2×10-5)

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