The solubility of lead (II) chloride is 0.45 g/100 mL of solution. What is the Kep of PbCl2? Express your answer in scientific notation rounded to three significant figures. It should be in this format : 1.63*10^-3 Molar mass of PbCl2 is 278.2 g/mol

Q: The forensic technician at a crime scene has just prepared a luminol stock solution by adding 18.0g…

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Q: A student is to prepare a 250.-ml solution of 1.0 M glucose (CHOs, 180.16 g/mol). How many grams of…

A: When a solute is dissolved in a solvent, we get a solution. Molarity is the number of moles of…

Q: Calculate the number of moles of solute present in 270 mL of 1.70 M HNO3(aq)M

A: The ions present in aqueous solution of nitric acid are H+ and NO3-. The number of moles of solute…

Q: Please answer the questions with solutions

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Q: Consider these compounds: A. MgCO3 B. Ni(OH)2 C. AgI D. MgF2 Complete the following statements by…

A: A) MgCO3 ⇌ Mg2++ CO32-      Ksp = 1.4 x 10-6B) Ni(OH)2 ⇌Ni2++2OH-       Ksp = 2 x 10-16C) AgI…

Q: What is the mass, in grams, of NaOH in 50.0 mL of a 35.2% (m/v) sodium hydroxide solution?

A: Volume of NaOH = 50.0 mL Mass by volume percentage of NaOH = 35.2 %

Q: What volume of a 0.25 mol/L salt solution in the kitchen contains 5.8 g of sodium chloride?

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Q: The therapeutic concentration—the concentration needed to be effective—of acetaminophen (C 8H 9NO 2,…

A: a) 1 ppm is equivalent to 1 mg/L of solution.  Thus 15 ppm will be equivalent to 15 mg/L. Conversion…

Q: 2.2 A concentrated perchloric acid solution has a density of 1.67 g/mL at 25°C and is 11.7 M. What…

A: Perchloric acid is a strong monoprotic acid. It readily deprotonates in aqueous solution.

Q: If you wanted to prepare 3.00 liters of a 2.5% (w/w) aqueous solution of potassium chloride (KCl)…

A: Given : Mass % of KCl i.e % (w/w) of KCl = 2.5 % Density of solution = 1.00 g/mL And volume of…

Q: Suzy is titrating 10 mL of potassium hydroxide with 6.7 mL of 0.15 M sulfuric acid. What is the…

A: This problem can be solved by using the molarity equation which is :                   M1 V1n1=M2…

Q: Is KNO, the correct answer for Question #3? If the answer is incorrect, justify why in the show your…

A: Solubility can be explained as the amount of any substance (solute) that can be dissolved in a given…

Q: 7.45g C2H6O in 2.28 L of solution? Calculate the molarity, express in 3 significant figures

A: Given: Mass of C2H6O  = 7.45 g Volume of C2H6O solution = 2.28 L Molar mass of C2H6O = 46.07 g/mol

Q: What mass of sodium chloride would need to be added to the blood to bring the sodium ion…

A: Given : Initial concentration of sodium ion in blood = 0.118 M Volume of blood = 5.0 L And final…

Q: In the laboratory you dissolve 13.4g of lead (II) acetate in a volumetric flask and add water to a…

A: Given:Mass of lead (II) acetate = 13.4 g.Volume of solution = 250 mL = 0.250 L.Molar mass of lead…

Q: 6. What mass of KBr is present in 25 mL of a 0.85 M solution of potassium chloride?

A: Molarity given = 0.85 M  Volume given = 25ml

Q: If 45.52 mL of a potassium permanganates solution is needed to titrage 2.145 g of ferrous ammonium…

A: Given that,Volume of KMnO4 = 45.52mLMass of ferrous ammonium sulfate hexahydrate =2.145 gMolecular…

Q: concentration expressions? Identify what is being asked in each item. CHOICES:  M % w/w X % v/v m…

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Q: Starting with a stock solution of glucose with a molarity of 0.750 M, four solutions are prepared by…

A: Molarity of stock solution = 0.750M Using the dilution factor formula, we can calculate the molarity…

Q: 2. What volume of 0.300 M NaCl can be prepared from 500. mL of 1.80 M NaCl? 3. How much water needs…

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

Q: How many grams of KOH are present in 35.0 ml of 5.50 M solution? Atomic Masses:K = 39.10; 0 = 16.00;…

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Q: What masses of sodium chloride, magnesium chloride, sodium sulfate, calcium chloride, potassium…

A: The salts that are present are listed as NaCl, MgCl2, Na2SO4, CaCl2, KCl and NaHCO3. The artificial…

Q: How many moles of Mg(ClO2)2 are present in 60.0 mL of 1.00 M Mg(ClO2)2 solution?

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Q: Assuming that the volumes are additive, what volume of water must be added to 35mL of 15%  KOH to…

A: Initial volume =35ml Initial strength Percentage =15% Final strength percentage =10%

Q: temperature? What mass of solute will dissolve in 100 g water at the following temperatures? a.…

A: 6.)  To answer these values we would check the curve of given solute and temperature, then look at y…

Q: 90 NANO, 80 70 60 CaCl 50 Pb(NO,)2 40 NaCi 30 KCI 20 KCIO, 10 Ce,(SOJa O 10 20 30 40 50 60 70 80 90…

A: Given data: The temperature of a saturated solution of Pb(NO3)2 = 30°C. The mass of Pb(NO3)2 that is…

Q: A chemist prepares a solution of potassium iodide (KI) by measuring out 7.2x10^2 μmol of potassium…

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Q: Calculate the mass of NaOH pallets in grams needed to prepare 50 mL of 0.25 M NaOH solution. The…

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Q: If concentrated HCl contains 439 g of HCl per 1 liter, what is the molarity?

A: Number of moles of HCl is calculated as, Number of moles = MassMolar mass…

Q: What volume in of a 0.32 M Mg(NOs)2 solution contains 45 g of Mg(NOs)2 ?

A: Given data,  Molarity of Mg(NO3)2 = 0.32 M  Given mass of Mg(NO3)2 = 45 g

Q: Be sure to answer all parts. Classify each of the following compounds as soluble or insoluble in…

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Q: 11. If 56.1 grams of NaCl are dissolved in 44.0 mL of Sulfuric acid, H2SO4 Sulfuric acid has a…

A: Given data:  Weight of NaCl = 56.1g Weight of H2SO4 = 120.0g Density of H2SO4=1.84g/ml

Q: how many grams of solid, anhydrous iron (II) chloride do they need to use? 27.9 g If a student wants…

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Q: A student dissolved 15 grams of pure acetic acid (CH,COOH) in enough water to make 100. milliliters…

A: Given:volume of solution, V = 100ml                              V=0.1Lmass of acetic acid,…

Q: 1. On a shelf sits a bottle of NaCl solutions with a molar concentration of 2.50 M and a total…

A: Given that: initial concentration of NaCl = 2.50 M initial volume of NaCl = 300 mL finla volume =…

Q: 8. How many grams and moles of solute are there in 250. mL of a 0.1OM CaCl, solution?

A: In the given question we have to calculate the grams and moles of solute in the Solution. Given data…

Q: #10 If I add water to 100.0 mL of a 0.15 M NaOH solution until the final volume is 150 mL, what will…

A: Dilution of the solution: On dilution of the solution with the pure water, the mole of solute…

Q: What is the ppm concentration of 6.00 mL sample of solution that has 3.6 x 10-4 g of sodium ions? *

A: ppm is parts per million means parts of solute present per million (per 106) parts of solution.

Q: What volume (in mL) of 4.35 M HCl solution is needed to react with 18.5 g of Ca(OH) 2

A: Acid reacts with base to form salt and water. The given acid is HCl and base is CaOH2. Write the…

Q: During a lab experiment performed at STP conditions, you prepare HCl by reacting 100. ml of Cl2 gas…

A: H2(g) + Cl2(g)----> 2HCl

Q: our boss wants you to prepare 200.0 mL, 1.50 osmol/L solution of NaCl. Describe the steps that you…

A: The relation between molarity and osmolarity can be expressed as: Osmolarity = Molarity × Van’t-Hoff…

Q: 2- Calculate the weight of solute in grams for each of the followings solutions: (a) 43.5 mL of…

A: Here i have calculated the weight of solute in grams

Q: What volume of 0.220 M HBr solution (in mL) is required to obtain 0.060 moles of HBr?

A: If V mL of a C (M) solution contains N mol of solute, then we can write: N=C×V1000…

Q: 7. Distinguish between the solute and solvent in each of the following solutions: (a) saltwater…

A: A solution consists of two components, solute, and solvent. The solute is the substance that is…

Q: If 5.00 mL of 0.0286 M CuSO4 is diluted to 10.0 mL with pure water, what is the molar concentration…

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Q: If 5.81 grams of NaCl are dissolved in 120.0 g of Sulfuric acid (sulfuric acid has a density of 1.84…

A: Given data:  Weight of NaCl = 5.81g Weight of H2SO4 = 120.0g Density of H2SO4=1.84g/ml

Q: If 6.00 mL of 0.0210 M CuSO4 is diluted to 10.0 mL with pure water, what is the molar concentration…

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Q: 2) Sucrose C12H22011 and ethyl alcohol C2H3OH are mixed to form a 14.1 %wt solution. If the density…

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Q: What mass of calcium chloride dihydrate, CaCl2•2H2O is required to prepare 100.0 mL of a 0.212 M…

A: To calculate the mass of calcium chloride dihydrate first we have to calculate the number of mole of…

Q: 4. Calculate how many grams of NaOH you should mass to make 500 mL of a 1 molar solution.

A: