18. The level of mercury in a stream was suspected to be above the minimum considered safe, 1ppb by weight. An analysis indicated the concentration was 0.68ppb. Assume the density of water to be 1.0g/mL, determine the molarity of mercury in the stream.   19. What is the molarity of a solution of sodium hydroxide that is prepared by mixing 100.0mL of 0.20M sodium hydroxide with 150.0mL of water?

Q: A student combined 45.3 mL of a 0.549 M calcium nitrate Ca(NO3)2 solution with 88.20 mL of a 1.321 M…

A:

Q: 8) Suppose that a solution of sulfuric acid (H2SO4) is titrated with potassium hydroxide. a. Write a…

A: a) Balanced chemical equation :   In this reaction, 1mol of sulfuric acid neutralized by the 2mol…

Q: 25.0 mL of a 0.95 M lead (II) chloride solution are mixed with 25.0 mL of a 0.75 M aluminum iodide…

A: Given: Volume of PbCl2 solution = 25.0 mL Molarity of PbCl2 solution = 0.95 M Volume of AlI3…

Q: The level of mercury in a stream was suspected to be above the minimum considered safe (1 part per…

A: The mass and moles of mercury are calculated as,

Q: A 7.96-g sample of a diprotic acid requires 136.0 mL of a 0.750 M NaOH solution for complete…

A: Given: Mass of sample = 7.96 g Volume = 136.0 mL Molarity of NaOH solution = 0.750 M

Q: A mixture of 2.00 mL 0.100 M sodium hydroxide and 1.00 L of 0.200 M calcium chloride was prepared.…

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Q: QUESTION 7 An antacid tablet contains CaCO as the active ingredient When 1552 grams of the tablet is…

A: Given: Mass of tablet = 1.552 g. Concentration of HCl = 2.845 M Volume of HCl used = 6.004 mL =…

Q: What volume of a 0.156 M barium hydroxide solution is required to neutralize 25.6 mL of a 0.126 M…

A: Given Concentration of ba(oh) 2 = 0.156 M Concentration of oh- (M1) =0.156*2 = 0.312 M Concentration…

Q: 0.369 g of a sample containing barium chloride dihydrate was completely dissolved in a total volume…

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Q: Solid zinc nitrate is slowly added to 175 mL of a 0.0377 M sodium hydroxide solution. The…

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Q: a. For a solution of 0.206 mol of potassium dichromate in 0.500 L. What is the molarity and mass of…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: sample of 0.720 g contains only NaHCO3 and Na2CO3. A student took 0.360 g of the sample and let it…

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Q: 1. A special sample of household vinegar contained 7.3% acidity. Determine the number of moles of…

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Q: A 10 mL aliquot of a sulfuric acid solution requires 28.16 mL of 0.1000 M sodium hydroxide for…

A: To find out what volume of 0.1000 M barium chloride will be required to titrate a second 10 mL…

Q: 20 A 56.0 mL portion of a 1.80 M solution is diluted to a total volume of 268 mL. A 134 mL portion…

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Q: A 0.0892 M solution of sodium hydroxide was used during a titration to determine the concentration…

A: Given, Molarity of NaOH , M1 = 0.0892 M Volume of NaOH , V1  = 22.50 mL  Volume of HNO3 , V2 = 15.00…

Q: A single solution is prepared by mixing the following three solutions together: 12.35 mL of 0.1000…

A: When a solution is diluted by adding solvent or another solution, the final molarity of solution can…

Q: 0.05 g of acetyl salicylic acid has been dissolved to the volume 25.00 ml to create a stock…

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Q: A 30.0ml sample of lithium hydroxide was mixed with 25.0 ml of a 0.250M solution of calcium…

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Q: An impure sample of potassium hydrogen phthalate (KHP) was titrated to determine the percent…

A: We will use stoichiometry of the reaction to get the answer.

Q: A solution was prepared by mixing 60.00 mL of 0.100 M HNO3 and 130.00 mL of 0.200 M HN03. Calculate…

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Q: 46. 53 mL of sulfuric acid solution is needed to reach the end point if 0.5126-g sample of sodium…

A: Titration is a laboratory quantitative technique in chemistry used to determine the concentration of…

Q: 20.0 mL of 0.30 M Nickel Sulfate (NISO4) was mixed with 35 mL of 0.70 M NISO4, what is the final…

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Q: What mass of silver chloride can be prepared by the reaction of 100.0 mL of 0.20 M silver nitrate…

A: Given: volume of AgNO3 = 100.0 mL = 0.1 L Concentration of AgNO3 = 0.20 M volume of CaCl2 = 100.0 mL…

Q: A solution was prepared by mixing 20.00 mL of 0.100 M HNO3 and 120.00 mL of 0.200M HNO3. Calculate…

A: Hello. Since your question has multiple questions, we will solve the first question for you. If you…

Q: An experiment is carried out by titrating 31.7 mL of a 0.340 M potassium hydroxide solution with…

A: Given: Concentration of potassium hydroxide i.e. KOH = 0.340 M Volume of KOH solution used = 31.7 mL…

Q: An aqueous solution of perchloric acid is standardized by titration with a 0.110 M solution of…

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Q: Consider sodium sulfate. a. Classify this compound as a strong electrolyte, a weak electrolyte, or a…

A: Electrolytes are classified into 3 categories as, 1) Strong electrolytes are those species which…

Q: 7. Calculate the molar concentration of a solution that contains 0.704 mol of cobalt(II) chloride in…

A: Given that: Number of moles of cobalt (II) chloride = 0.704 mol Volume of solution = 587 mL = 0.587…

Q: 17. Calculate the percentage concentration by mass of a solution prepared by dissolving 2.32 g of…

A: Since you have asked multiple questions, we are solving first question for you. For remaining…

Q: An analyst is given 215 mL of a 0.781mol/L calcium perchlorate. How many mL of a 0.600M ammonium…

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Q: 3) It takes 29.61 mL of 0.246 M sodium hydroxide solution to titrate 10.00 mL of sulfuric acid…

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Q: An aqueous solution of hydrochloric acid is standardized by titration with a 0.192 M solution of…

A: GivenGiven, A 0.192 M solution of calcium hydroxide. If 25.4 mL of base are required to neutralize…

Q: Describe how much solid NaHCO3 and water you would need to create a 25.0 mL of 0.100 M NaHCO3 Assume…

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Q: 40.0 ml of nitric acid requires 100.0 ml of 0.500 M potassium hydroxide to neutralize it. What is…

A: The expression to calculate the unknown value from known concentration is given by, M1V1=M2V2 where…

Q: A 1.00 M solution has an initial volume of 100. mL. Water is evaporated from this solution, and the…

A: Since initially we have moles of solute = molarity X volume of solution in L = 1 X 100 / 1000 = 0.1…

Q: 100 mL of 0.50 M potassium iodide are combined with 50. mL of 0.75 M lead (II) nitrate. Calculate…

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Q: 10. Describe, using words and calculations, how to get 500.0 mL of a 0.10 M NaOH solution from a…

A: Dilution formula given as M1V1 = M2V2 Where M1 = molarity of stock solution  V1= volume of stock…

Q: 1. One of the components of polluted air that causes photochemical smog is NO (nitrogen monoxide).…

A: The enthalpy of a reaction is the amount of heat released or absorbed during the course of the…

Q: 21. What volume of stock solution is needed to prepare 100.00 mL of 0.125 M solution from 2.50 M…

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Q: A solution is made by mixing 13.85 mL of 4.00 M acetone, 23.32 mL of 1.00 M HCl, 10.00 mL of 0.0500…

A: Number of moles of acetone present initially = molarity x volume (L) = 4 M x 0.01385 L = 0.0554 mole…

Q: Calculate the sodium ion concentration when 60.0 mL of 3.9 M sodium carbonate is added to 24.0 mL of…

A: We will first find concentration of sodium carbonate and sodium bicarbonate in final solution. Then…

Q: 1125 mL of a 0.75 M All solution was mixed with 920 mL of a 0.4 M NaCl solution. What is the [I]…

A: Given,  The molarity of AlI3 = 0.75 M.  The volume of AlI3 = 1125 mL.  The molarity of NaCl = 0.4 M.…

Q: 44.0 mL of water was added to 100.0 mL of 0.250 M CaCl₂ solution. Assume the volumes are additive.…

A: The objective of this question is to find the concentration of CaCl2 in the diluted solution after…

Q: Solid zinc nitrate is slowly added to 175 mL of a 0.0572 M potassium sulfide solution. The…

A: Here we are required to find the concentration of zinc which is needed to just initiate the…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.