The EPA threshold for acceptable levels of lead ions in water is 615 ppb. What is the molarity of an aqueous solution with a concentration of 15 ppb?

Q: A 50.0 mL solution of Ca(OH)₂ with an unknown concentration was titrated with 0.340 M HNO₃. To reach…

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Q: Using the Txy diagram, estimate the dew-point temperature and the equilibrium liquid composition…

A: Given: There is a liquid mixture of benzene and toluene at P = 1 atm pressure. The vapor mixture…

Q: Indicate the concentration of each ion present in the following solutions: a) 0.35 M NaOH b) 0.55 M…

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Q: 1. What is the theoretical yield of boric acid that can be prepared from 10.0151 g of sodium…

A: (1) Write the reaction for the formation of boric acid as follows: Na2B4O7 + 2HCl + 5H2O → 2NaCl +…

Q: The equilibrium concentration of barium ion in a saturated barium phosphate solution is  M.

A: Barium phosphate Ba3(PO4)2 is an ionic compound. The dissociation of Barium phosphate in water is as…

Q: Concentrations of toxaphene in fish may impair human health and fish-eating birds (such as bald…

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Q: When Ca(OH)2 is dissolved in water, it is known that the enthalpy of solution (AHsoln) is -16.2…

A: Given data: Enthalpy of solution = -16.2 kJ/mol Mass of calcium hydroxide = 54 g Volume of water =…

Q: Corrosion is caused by a redox reaction and if often accompanied by gas evolution. Aluminum metal is…

A: (1) Given that aluminium metal reacts with sulphuric acid to produce hydrogen gas. Thus the balanced…

Q: I have a vitamin supplement which has 5 mg of Vitamin A (Chemical name: Retinol, formula C20H30O)…

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Q: Calculate the molecular weight of sulfur if 35.5 grams of sulfur dissolve in 100.0 grams of CSz to…

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Q: What is the concentration of each type of ion in solution after 23.69 mL of 3.611 M NaOH is added to…

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Q: Q3: COD test is often used in conjunction with the BOD test to estimate the amour of…

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Q: is 5.0. If 20 m³ of wastewater must be treated per day, determine the number of extractions and the…

A: The pollutant concentration in the wastewater and the solvent at equilibrium is described by the…

Q: What is the concentration of the HCI acid solution, if 75 ml of the solution is neutralised by 125…

A: This question is related to neutralization of HCl and NaOH We will apply the concept of…

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A: Given: Weight of HA = 1.90 g Volume of Ca(OH)2 =  38.6 mL Cocentration of Ca(OH)2 = 0.253 M

Q: 3. What is the molar concentration of the equivalent substance of sulfuric acid in solution, if its…

A: Molarity (M): Molarity is the amount of a substance in a certain volume of solution. Molarity is…

Q: The equilibrium concentration of iodide ion in a saturated silver iodide solution is ____ M? The…

A: Chemical Reaction of iodide ion in a saturated silver iodide solution:…

Q: Calculate the percent ionization of propionic acid 1C2H5COOH2 in solutions of each of the following…

A: The percent ionization of the propionic acid is to be calculated for the given concentration.

Q: Q2:- How many millilitres of concentrated sulphuric acid, 99.0% , density 1.831 g/cm3, are required…

A: Given, 99% H2SO4 Density = 1.83

Q: Which of the following is not a criteria pollutant?     carbon monoxide     PM2.5     carbon…

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Q: A volatile solute was added to a solvent to form an aqueous solution. Which will best represent the…

A: Explanation of first question When we will add solute  to a solvent, the vapor pressure of the…

Q: How many grams of aluminum are there in 4.05 x 10²5 molecules of Al203?

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Q: If 0.300 mol of an unknown acid, HY, is dissolved in enough water to make 1.00 L of solution, find…

A: Write the reaction for the ionization of HY as follows: HY → H+ + Y-   Ionization constant, Ka =…

Q: A vapor-liquid equilibrium system of benzene and toluene has a bubble point equal to 100 degC at 750…

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Q: The mass of copper(II) carbonate that is dissolved in 175 mL of a saturated solution i | grams.

A: The dissociation reaction of Copper (II) carbonate is as follows:                        CuCO3(aq.)…

Q: QUESTION 18 How many grams of sodium acetate (C,H,0,Na) need to be dissolved in 180 mL of a 0.377 M…

A: Given, Volume of acetic acid=180  mL=0.18 L Molarity of acetic acid=0.377 M

Q: A stock solution of 70% v/v ethanol was diluted with distilled water to prepare 1L of 21% v/v…

A: Initial concentration=70%v/v Density of ethanol=0.789h.mL Molecular weight of ethanol=46g/mol TO…

Q: Benzene (i), toluene (ii), acetonitrile(iii), and methane(iv) are among the chemical wastes…

A: Given: 4 chemical waste given. (Benzene, toluene, acetonitrile, methane) Give the permitted exposure…

Q: A 4L solution with a concentration of 0.02M NaCI was diluted in 1 liter of water The molarity of the…

A: The equation for dilution is C1 is initial concentration of standard solution = 0.02 M V1 is…

Q: A solution containing A and B components is charged to a distillation column. 100 mol/hr of the…

A: Feed, F =100 molhr Moles of A in feed, FA = 80 mol Moles of B in feed, FB = 20 mol Moles of A in…

Q: If the concentration of hydrogen ion is 10 mole per liter then the pH of the solution is -(1, 10,…

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Q: If the solution X has a pH of 6 and solution Y has a hydronium ion concentration twice that of…

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Q: You dissolve 4.000 g solid ammonium chloride in 100.0g of water inside a Styrofoam coffee cup. You…

A: When a chemical reaction occurs in the Styrofoam coffee cup calorimeter, the heat of the reaction is…

Q: A 0.3600 g rock sample containing an unknown amount of Ca was dissolved in HCI and diluted to 100.0…

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Q: Q.1: 100 kg of an aqueous solution of B, containing 10% B is to be extracted using S solvent. Water…

A: Given data: Amount of feed = 100 kg Composition of solute in feed = 10 % (by weight) Amount of…

Q: If you drink one liter of pure, distilled water, how many moles of H3O+ ions did you ingest?

A: The number of moles of H3O+ ions ingested during the drinking of the one liter of distilled water is…