A student added 0.20 mol of NaI and 0.40 mol of KI to 3 L of water to create an aqueous solution. What is the minimum number of moles of Pb(C2H3O2)2 that the student must add to the solution to precipitate out all of the iodide ions as PbI2?

Q: What is the percent of ZnO in an ointment prepared by mixing 150 g of 25% ZnO, 350 g of 5%ZnO and…

A: Given: Mass percent of ZnO in sample 1 = 25 % Mass of sample 1 = 150 g. Mass percent of ZnO in…

Q: ta The solubility of KNO3 is 30 g/100 g H₂O at 20 °C. If you mixed 95 g of KNO3 in 300 g of water,…

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Q: A quantity of 22.68mL of a KOH solution is needed to neutralize 0.5118g of potassium hydrogen…

A: The reaction given is, => KOH (aq) + KHP (s) --------> K2P (aq) + H2O (l)  Balancing : Since…

Q: Which of the following compounds is soluble in water?  A. AgCl B. AgI C. PbSO4 D. Pb(C2H3O2)2…

A: Since the silver halides are insoluble in water. Hence option A i.e AgCl and option B i.e AgI is not…

Q: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of…

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Q: A 35.0 mL portion of 0.255 M nitric acid is added to 45.0 mL of 0.328 M Mg(NO3)2. What is the…

A: Given: Volume of nitric acid=35.0 mL Molarity of nitric acid=0.255 M Volume of Mg(NO3)2=0.328 M To…

Q: 30.00 mL of nitric acid (HNO3) with an unknowne concentration was placed into an erlenmeyer fask,…

A: Acid base neutralization reaction involves formation of salt and water. Moles of base reacts with…

Q: As you are studying for finals, you calculate the concentration of caffeine in an energy drink and…

A: Mass of caffeine = 289 mg = 0.289 g  Molar mass of caffeine = 194.19 g/mol  Moles of caffeine =…

Q: Use the solubility rules listed in Section 8.3B to predict whether each of the following ionic…

A: Since you have posted multiple sub-parts, the answer for first three sub-parts are given below.…

Q: Calculate the new molarity if 100.0 mL of water is added to 25.6 mL of 1.08 M sulfuric acid, H2SO4…

A: Given :-  Initial molarity = 1.08 M  Initial volume = 25.6 mL  Volume of water added = 100.0 mL  To…

Q: What mass of NaCrO4 is required to precipitate all of the silver ions from 75.0 mL of a 0.100 M…

A: NOTE: please note that molecular formula of sodium chromate indicated is wrong. I have used the…

Q: 2 You will need 25.0 mL of 0.5 M solutions of each reagent. To do this: Calculate the mass of sodium…

A: Molarity of Na2CO3=0.5M Volume of the solution =25.0 mL = 25.0mL1000mL×1L=0.025L

Q: 11. On the basis of the general solubility rules given in Table 7.1, predict which of the following…

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Q: A 0.786 g sample of KHP is dissolved in 50 mL of water and titrated with KOH. The initial burette…

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Q: -) If 31 mL of the previous KOH solution (2A) was used to make 100 ml of a diluted KOH solution what…

A: According to the law of chemical equivalence, in a chemical reaction, the number of equivalents that…

Q: A 0.411 g sample of potassium hydrogen phthalate, KHC8H4O4 (molar mass = 204.22g/mol), is dissolved…

A: Calculation of moles for KHC8H4O4:

Q: 2. Suppose a titration needed 27.15 mL of 0.2497M HCI solution to completely react 25.00mL Ba(OH)2…

A: The number of moles of a substance is determined as the mass of a substance upon its molar mass. The…

Q: What mass of silver carbonate (MW = 275.75 g/mol) precipitates when 18.0 mL of 3.2M silver acetate…

A: Molarity = number of moles of solutevolume of the solution (in ml)×1000Number of moles of solute =…

Q: As you are studying for finals, you calculate the concentration of caffeine in an energy drink and…

A: Given: Mass of caffeine = 257 mg = 0.257 g                                             (Since 1 g =…

Q: 400 cm3 of water can dissolve 0.312 g amount of magnesite (MgCO3). What is the solubility product of…

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Q: 10 mL of 0.6M NiSO4 is mixed with 20 mL of 0.3 M CuSO4 . calculate the molarity of Ni2+, Cu2+ and…

A: [Ni2+ ] = 0.2M [Cu2+]= 0.2 M [ SO42-] = 0.4 M

Q: How many milligrams of Zn(CN), can dissolve in enough water to make 100.0 mL of solution? The Ksp of…

A: Given :                                              Zn(CN)2 (s)    ⇌    Zn(aq)2+   + 2 CN(aq)-  Let…

Q: What is the concentration of FeCl 3 in a solution prepared by dissolving 35.0 g of FeCl 3 in enough…

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Q: Does a precipitate form if you add 20.00 mL of a 6. 97x10-5 mol/L solution of lead (II) nitrate,…

A: Given,  Molarity of Pb(NO3)2 = 6.97 x 10-5 mole/L  Volume of Pb(NO3)2 in mL = 20.00 mL  Molarity of…

Q: What volume (mL) of 0.0.214 M (NH4)2HPO4 is necessary to precipitate the calcium as Ca3(PO4)2 from…

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Q: What is the mass of solute in a 500 mL solution of 0.200 M sodium phosphate (Na3PO4)? (MW…

A: Given  Molarity of Na3PO4 = 0.200 M Volume of solution = 500 ml = 0.5 L Molar mass of Na3PO4 = 164…

Q: Calculate the molarity of 25.0 grams of KBr dissolved in 750.0 mL. (Molar mass of solute = 119…

A: The given data contains, mass of KBr = 25 g. Volume = 750 ml = 0.750 L.

Q: NH 3 can be supported by the solubility curves shown? Which inference about Solubility Curves 150…

A: We are given the solubility curve for the solubility of different ionic compounds and gases.  The…

Q: A solution contains 0.0480 M Ca²+ and 0.0990 M Ag*. If solid Na;PO4 is added to this mixture, which…

A: Given information: Concentration of calcium ions = 0.0480 M Concentration of silver ions = 0.0990 M

Q: Calculate the formal concentration (in molarity) of a KCl solution if 21.3 g of KCl is dissolved in…

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Q: As you are studying for finals, you calculate the concentration of caffeine in an energy drink and…

A: Molarity is equal to the number of moles of solute dissolved in per litre of solution. It is denoted…

Q: Calcium hydroxide is sometimes used in water treatment plants to clarify water for residential use.…

A: We have Calcium hydroxide as 0.025 M, Aluminium sulphate as 0.125 M of 25 ml. We have to calculate…

Q: Which of the following will be a precipitate in aqueous solution?     a. MgBr2   b. NaBr   c.…

A: (c) AgCl silver chloride forms a white precipitate in aqueous medium. Because the solublity product…

Q: What is the cobalt(II) ion concentration in a solution prepared by mixing 351 mL of 0.372 M…

A: The balanced equation for the reaction is   Co+2 (aq) + 2 OH– (aq) -----------> Co(OH)2 (s)…

Q: The ionic compound AB (346 g/mol) has a solubility of 4.63 x 10-3 g/L. What is the Ksp of the…

A: Given data : Solubility is the extent to which a mineral will dissolve in water,

Q: CH3COOH

A: Acid-Base Titration Base: V = 55.7 ml, Molarity = 0.10 M Acid: V = 15 ml, Molarity = ? M

Q: Oxygen gas and solid potassium chloride are added to a beaker of distilled water. As the temperature…

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

Q: A solution was prepared by dissolving 5.76 g of KCI MgCl2 6H2O (277.85 g/mol) in sufficient water to…

A: Amount of KCl. MgCl2. 6H2O dissolved = 5.76 gMolar mass of KCl. MgCl2. 6H2O = 277.85 g/molNumber of…

Q: In a double replacement precipitation reaction, KCl reacts with Pb(NO3)2 in a 2:1 mole ratio,…

A: Potassium chloride reacts with lead (II) nitrate to form potassium nitrate and lead (II) chloride.…

Q: What is the mass of the precipitate formed when 12.0 mL of 0.150 M NaCl is added to 25.00 mL of a…

A: We know that silver chloride is a weak salt its solubility product is very low. Therefore, we can…

Q: The solubility of magnesium fluoride, M&F2, in water is 1.5 x 10- g/L. What is the solubility (in…

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Q: If you add 4.00 mL of pure water to 6.00 mL of 0.750 M NaCI solution, what is the concentration of…

A: During dilution, no moles remain the same. As no of moles = Molarity × Volume So, on dilution…

Q: What is the molarity of NO3 - in solution?0.150 M Al(NO3)3

A: Molarity is defined as the number of moles per litre of the solution.

Q: A student places 20.00 mL of 0.1005 M HCl in a flask and adds a few drops of phenolphthalein. She…

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Q: Calculate the mass of MgCO3 precipitated by mixing 10.00 mL of a 0.200 M Na2CO3 solution with 5.00…

A: The following reaction is occurring: Determine the moles of Na2CO3 present in the reaction as shown…

Q: Calcium oxalate is very insoluble in water.  What mass of sodium oxalate is required to precipitate…

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Q: What is the molarity of K+ in a solution that contains 89.72 ppm of K3Fe(CN)6 (329.3 g/mol

A: we know that  1ppm = 1 mg/L formula for Molarity =  M = {gram of molecule/ molar mass of…

Q: molarity of Na2CO3(aq)?

A: