To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.800 ppm0.800 ppm fluoride, F−.F−. How many grams of F−F− must be added to a cylindrical water reservoir having a diameter of 4.00×102 m4.00×102 m and a depth of 82.09 m?82.09 m? mass:   g F− How many grams of sodium fluoride, NaF, contain this amount of fluoride? mass:   g NaF

Q: Concentration of DDT (molar mass= 354.49 g/mol) in groundwater sample is found to be 0.030 mg/250.0…

A: We have to predict the concentration in mmol/L.

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A: Molarity is defined as no.of moles of solute devided by volume of solution in liter.

Q: In the lab, a student makes a solution of CaCl 2 by dissolving 9.0 grams of solid in 425 mL of…

A: We have given that  Mass of CaCl2 = 9 gram  Volume of solution = 425ml = 0.425L  We know that…

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A: The objective of the question is to determine the concentration of  in the diluted solution.

Q: Exactly 6.21 g of MgCl2 (molar mass = 95.2 g/mol) was dissolved in water.  An analysis indicated…

A:

Q: Find the mass of solute needed to prepare 0.500 mL of 1.20 mol/L Ca(OH)2(aq) solution

A: Given: Volume= 0.500 mL Molarity = 1.20 mol/L

Q: difference in volume:

A:

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A:

Q: In this station, you will find 400.0 mL of a 0.500 M aqueous solution of calcium chloride. What mass…

A: Molarity of any solution is given by :Molarity =Number of moles of solute Volume of solution(in…

Q: A 1000 mL sample of seawater was found to have contained 40 ?g of Hg2+ ions. What is the…

A: This question is related to stoichiometry. In this question, volume and density of seawater sample…

Q: Define

A: Introduction: The number of moles of solute in 1L of  solution is called Molarity

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A: To solve this problem we will first calculate the number of moles of KMnO4   Then Molarity will be…

Q: In a laboratory experiment, a 19.0 −mL−mL sample of KClKCl solution is poured into an evaporating…

A:

Q: How many g of sodium ions are in 250 mL of 0.20 M NazSO4 solution? (Na2SO4: 156 g/mol , Na: 23…

A: first find the amount of Na2SO4 then find Fraction composition of Na in  Na2SO4 Then Multiply…

Q: What is the molarity of 30g of table salt in 120ml of water. Density of table salt is 2.17 g/ml.

A: Molarity is the amount of moles of any substance present per liter volume.  Molarity = moles of…

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A:

Q: I add 2.00 g NaCl and 6.42 g BaCl₂ to a a container. You can assume that both of these salts are…

A:

Q: Calculate the molarity of a solution containing 107 grams of NaCl in 1021 ml of solution? (Atomic…

A: Molarity of a solution can be calculated by dividing the moles of the solute with the volume of the…

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A: Given ,          mass of caffeine=232 mg=0.232 g        volume of solution-20.0 fluid ounces

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A: Given: Concentration of NaOH = 1.5 M Volume of solution required = 25.0 mL = 0.025 L…

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A: To determine the molarity (M) of a solution, you can use the formula:M In this case, you're given…

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A:

Q: The mass percent of acetic acid (CH3COOH) in a bottle of vinegar is 5.45% in water. What is the…

A: Consider the volume of the solution as 1 L (1000 mL).Determine the mass of l L of solution from the…

Q: a chemist wants to make 5.5 L of a 0.300 M CaCl2 solution. What mass of CaCl2 (in g) should the…

A: Given : Concentration of CaCl2 = 0.300 M And volume of solution = 5.5 L

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A: The objective is to determine the concentration of Na2HPO4 in the original solution. Given…

Q: One brand of laundry bleach is an aqueous solution containing 4.00% sodium hypochlorite (NaOCI) by…

A: Molarity is defined as a number of moles of solute dissolved in one liter of solution.…

Q: A Wisconsin farmer taps a maple tree and collects 200 liters of sap. He determines the sucrose (C12…

A: Concentration in terms of molarity is defined as the moles of solute present per liter of the…

Q: Payalben

A:

Q: A sample of seawater from a tidal estuary was found to contain a concentration of 567 mg of chloride…

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Q: a You have 100 mL of 0.54 M sodium lactate solution. If you add water until the total volume reaches…

A:

Q: If 0.42 mg calcium fluoride, CaF2 is used as above to add fuoride to the drinking water, does CaFz…

A: Given that 0.42 mg CaF2 is used to add fluoride in drinking water.We have to find between 0.42 mg of…

Q: eus to prepare 250 mL of a 0.500 M aqueous solution of sucrose, C12H22 biological experiments. (aq),…

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Q: Suppose 0.0746 g of nickel (II) iodide is dissolved in 50. ml. of a 36.0 m M aqueous solution of…

A: We have to calculate final molarity of iodine anion in the solution

Q: Suppose 3.32 g of nickel(II) iodide is dissolved in 200. mL of a 0.30 M aqueous solution of…

A: The equation is,

Q: Dissolved particles in the blood has a total concentration of 0.30 M. A person was given 150 mL per…

A:

Q: The solubility of magnesium hydroxide, Mg(OH)2, in water is 9.0 x 10 4 g/100 mL. What volume of…

A: The equation for the above process is written as: Mg(OH)2+HNO3---------->Mg(NO3)2+H2O. Now,…

Q: Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person…

A: Solution :       The molarity of the solution is defined as the number of moles of solute dissolved…

Q: A solution is prepared by dissolving 3.0 g iron(II) chloride (MW=126.8 g/mol) with 75.0 mL of water.…

A: Solution Molar concentration is that the most convenient technique of expressing the concentration…

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A:

Q: Give a clear handwritten answer  What mass of solute is contained in 16.0 mL of a 0.300 M NaF(aq)…

A:

Q: An aqueous solution of manganese (II) iodide,MnI2,is made by dissolving 21.1 grams of manganese(II)…

A: Weight/Volume percentage = it tells about amount of solute present per 100 mL of solutionWeight of…

Q: How many grams of barium acetate, Ba(CH3 COO)2 , must be dissolved to prepare 250. mL of a 0.218 M…

A: The amount of a solute dissolved in a specified volume of the solvent is expressed by the…

Q: A solution is prepared by mixing 626.0 mL of ethanol with 608.0 mL of water. The molarity of ethanol…

A: Given that the solution is made by mixing 626.0 mL of ethanol and 608.0 mL of water. Total volume of…