According to the EPA, when the concentration of lead in tap water reaches 15 ppb, certain remedial actions must be taken to protect human health. (dtap water = 1.00 g/mL). You find 1.8 μg in 100 mL of a Flint Michigan drinking water sample. What is the concentration of lead in the drinking water sample in ppb units and is the water safe to drink?

Q: 2.12 Fundamental water quality parameters A municipal water supplier reported concentrations of…

A: Hardness of water Hardness of water is a measure of the total concentration of the calcium and…

Q: How many grams of NaCl required to prepare each of the following solutions: a) 2500 ppm (w/v) NaCl…

A: (a). Given,  ppm of NaCl = 2500  Volume of the solution = 250 mL  Mass of NaCl = ?

Q: lce the table of substances and their solubilities in water to answer the following questions:…

A: Separation of mixtures based on their solubilities

Q: 6 × 10-3 g oxygen is dissolved per kg of sea water. Calculate the ppm of oxygen in sea water.

A: Given data contains. Mass of oxygen is 6×10-3g. Mass of sea water is 1 kg=1000 g

Q: Q1: A solution of 100 mL of 1.17 % (WV) NaCI is prepared in a laboratory; calculate the NaCl…

A: Given: Volume of solution = 100mlConcentration of  NaCl= 1.17 % w/v

Q: The sulfate ion level in a municipal water supply is given as 46.1 ppm. What is [SO42-] in this…

A: Answer: Concentration of sulfate ion given is 46.1ppm which means in 106g solution, 46.1g sulfate…

Q: A chemist starts with 28mL of a 0.4M NaCl solution and dilutes it to 989mL. What is the Molar…

A: Initial concentration, M1 = 0.4M Initial volume, V1 =  28mL Final concentration, M2 = ? Final…

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

A: (a) Given that : Also, 1 ppb=1 μg/LSo, concentration of lead=15 μg/L In mg/L Concentration of…

Q: A 10.00 gram sample of stream water was found to contain 2.00x10-6 g lead. What is that…

A:

Q: The maximum contaminant level of fluoride (F−)(F−) in drinking water as set by the the Environmental…

A: Parts per million is abbreviated as ppm and is expressed as mg/L. 1 ppm=mgL

Q: An aqueous solution that contains 425 ppm of potassium nitrate (KNO3) is being used in the lab.…

A:

Q: Consider the solubility curve of NH,Cl at 40°C in 400 grams of H20 to make 250 mL solution. i)…

A: Answer :-  1. Mass of NH4Cl (solute) = 164 g  2. Moles of NH4Cl (solute) = 3.07 mol.  3. Molality of…

Q: Why do Sedimentation and filtration is important in water treatment? Is a period of timeimportant in…

A: Any process that improves the quality of water to make it suitable for a specific end-use is known…

Q: Prepare a solution of sodium chloride by dissolving 5 g of it in 500 ml of distilled water. Express…

A: Concentration: It is the parameter to calculate the amount of solute that is getting dissolved per…

Q: A 3.0 kg sample of pond water contains 3.6 mg of a pollutant. What is the concentration of this…

A: Given information,       3.0 kg sample of pond water contains 3.6 mg of a pollutant.

Q: calculate the mass (in g) or volume (in mL) of solute needed to prepare the following solutions.…

A: Given :-We have to calculated the mass (in gm) or volume (in mL) of soluteneeded to prepare of the…

Q: A solution of SO2 in water contains 0.000045 g of SO2 per liter of solution. What is the…

A: The concentration of any solution can be defined as “the amount of solute present in the solvent…

Q: If tap water contains 2.35 x 10^-3 M CaCO3, calculate the concentration of CaCO3 in ppm.

A: In this question, we want to determine the Concentration of CaCO3 in ppm  How we can convert…

Q: contain benzene (C6H6) at molarity levels higher than concentrations considered lethal for rats. A…

A:

Q: Rank the following solutions by increasing vosmotic pressure (OP) from low (1) to high (5)  Assign…

A: Given, Rank the following solutions by increasing osmotic pressure (OP) from low (1) to high (5)…

Q: Between which two gases would you expect N2 to fit onthis graph?

A: Solubility of the compound is defined as the ability of the compound to be dissolved in water or any…

Q: What is the concentration, in ppm (m/m), of a sodium chloride solution prepared by adding 37.5 g of…

A: Parts per million concentration (ppm) is the amount of solute in mg dissolved in one kilogram of…

Q: Which type of interaction from the diagram must be strong in order to dissolve a salt?  When…

A: Solution is made up of solute and solvent .Solute is present in small amount and solvent is present…

Q: Trace metals and organic contaminants are normally present at sub ppb levels in waters. What is the…

A: ppb is defined as the parts of solute per billion parts of solution given by, => ppb = Mass of…

Q: concentration

A:

Q: Calculate the solubility of SrCO3 in water at 25 °C. Round your answer to 2 significant digits. 0…

A: Given,  Solubility of SrCO3 in water at 25°C = ? Note:  Solubility product constant (Ksp) of SrCO3 =…

Q: A Vitamin C packet is added to a glass of water containing 700.0 mL of water. The Vitamin C packet…

A:

Q: A solution of lead sulfate (PbSO4) contains 0.425 g of lead sulfate in 100.0 g of water.  What is…

A: Given that : Mass of PbSO4 = 0.425 g Mass of water = 100.0g Total mass of the solution = 0.425g +…

Q: 6.67 x 10-3 g of arsenic (As) is found in a 0.600 L sample of water. If the density of this sample…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: How to prepare 0.2 M 50 mL HCl solution and 100 mL 5 ppm NaCl solution? Please explain. (dHCl: 1.18…

A: Molarity is a way of expressing concentration defined as moles of solute present per liter of…

Q: If 19.6 grams of an aqueous solution of sodium bromide,NaBr,contains 1.92 grams of sodium…

A: Given: Mass of Sodium bromide=1.92 g Mass of solution=19.6 g  To Find: weight/weight % Solution:…

Q: concentration in ppm?

A:

Q: What are the essential requirements of domestic water? Enumerate the various steps involved in the…

A:

Q: Solution Volume of Solute Mass of Solute Volume of Water (if liquid) to be Added A. 5% by volume,…

A: Concentration of a solute can be expressed in terms of volume by volume percentage. Write the…

Q: Calculate the ppm of a solution containing 635 mg of Calcium nitrate dissolved in 5.50 mL of water.

A: We know that, ppm = mass of solute (mg)/volume in litre

Q: According to the EPA, when the concentration of lead in tap water reaches 15 ppb, certain remedial…

A: Ppb is parts per billion Ppm is parts per million 1000 ppb = 1 ppm 1 ppb        = 0.001 ppm 15 ppb…

Q: A solution of rubbing alcohol is 78.1 %% (v/v) isopropanol in water. How many milliliters of…

A: Volume concentration of a solution is expressed as % v/v, which stands for volume per volume. This…

Q: What is the hardness in water in ppm if there is 500g of CaCO3 in 1 x 10^3mL of water?

A: amount of CaCO3=500g volume of water=1×103 ml Mass of water =density of water ×volume

Q: Calculate the mass of KI in grams required to prepare 5.00 × 102 mL of a 2.80 M solution.

A: *   Concentration = No. of molesVolume of solution (L)* Number of moles = weightMolar massMolar mass…

Q: 6.02 x 10^20 molecules of urea are present in 100 mL of its solution. The concentration of solution…

A: First we will find moles of urea present using mole concept. Then find concentration of urea.

Q: 5. What is meant by seawater intrusion in drinking water supplies? How does this happen? What are…

A: Details of seawater intrusion is given below.

Q: A 2.5-g sample of groundwater was found to contain 5.4 mg of Zn?* What is the concentration of Zn2"…

A:

Q: The maximum acceptable concentration of Pb (207.2 g/mol) in drinking water is 10. ppb.  If a water…

A: Given :  Acceptable Concentration of Pb = 10 ppb  Molar mass of Pb = 207.2 g/mol  Concentration of…

Q: A solution of 100 ml of 1.17 % (W/V) NACL is prepared in a laboratory , calculate the NACL…

A:

Q: What volume of 4.61 M NaCl solution is needed to prepare 555 mL of a 1.23M diluted NaCl solution? O…

A: Given: Concentration of stock NaCl solution = 4.61 M Concentration of final NaCl solution = 1.23 M…

Q: es According to the EPA, when the concentration of lead in tap water reaches 15 ppb, certain…

A:

Q: Calculate the solubility of PbCrO4 in water at 25 °C. Round your answer to 2 significant digits.

A:

Q: Why do Sedimentation and filtration is important in water treatment? Is a period of time important…

A: The sedimentation process is most important process which is imposed for the reduction of…