A 1.787 g sample containing some Fe2+ ion requires 31.50 ml of a 0.02188 M KMnO4 solution to reach a pink endpoint. What is the percent by mass of Fe2+ in the sample?

Q: (a) How many milliliters of 0.120 M HCl are needed to completelyneutralize 50.0 mL of 0.101 M…

A: Hi. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If you…

Q: If you dissolved 20.5 grams of solid KCI in 250 ml of water, what would the molar concentration of…

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Q: 24. How many milligrams H;SO4 (98.09 g/mol) are present in 35.00ml of 0.200 M H2SO, solution? 229 (…

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Q: Calculate

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Q: Calculate the following quantity: molarity of a solution prepared by diluting 56.27 mL of 0.0351 M…

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Q: What will the molarity be of the resulting solutions made by mixing the following? Assume that…

A: (a) Molarity of H3PO4, M1 = 4.7 M Volume of H3PO4, V1 = 129 mL Volumes are additives- Volume of…

Q: Moles of oxalic acid in 20.00 mL of the above prepared solution? Mass of H2C2O4·2H2O=1.32191 g…

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Q: what volume (L) of 0.404 M potassium hydroxide solution would just neutralize 60.6 mL of 0.388…

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Q: A sample of iron ore weighing 0.2812 g was dissolved in an excess of a dilute acid solution. All the…

A: The volume of the given solution is 21.70 mL which is equal to 0.0217 L. The number of moles of…

Q: What is the normality of a solution of KMnO4 if 100.26 mL will oxidize that weight of KHC2O4.H2O…

A: Solution - According to the question - (N1V1)  (NaOH) = N2V2 (KHC2O4.H2O) Formulas - n1m1v1 = n2m2v2…

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: How many grams of silver nitrate can I make if I mix 25.0 mL of 3.50 M of AgNO3 with 125mL of 1.50M…

A: 1) Volume of Silver nitrate is (V1)=25.00 mL 2) Volume of NaCl is (V2)=125.00 mL 3) Concentration of…

Q: 1. A solution was prepared by dissolving 1210 mg of K3Fe(CN)6 (MM=329.2 g/mol) in sufficient water…

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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: hat volume of 0.500m cr2 (so4)3 solution is needed to react completely with 300. ml of 0.400 m…

A: Given molarity of BaCl2 = 0.400 M volume of BaCl2 = 300 ml molarity of Cr2(SO4)3 = 0.500 M

Q: A 35.0-mL sample of 1.00 M KBr and a 60.0-mL sample of0.600 M KBr are mixed. The solution is then…

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Q: How many grams of FealcOa)3 react completely with 20.0mL of 2.00M of Fe. are required to

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Q: Calculate the composition of each of the following solutions in mass/volume %:a. 50.0 g ethanol…

A: Mass by volume percentage can be calculated as: mass of solutevolume of solution×100

Q: Ibuprofen, widely used as a pain reliever, has a limited solubilityin water, less than 1 mg>mL.…

A: The considered chemical compound is ibuprofen.

Q: Consider the reaction of 75.0 mL of 0.350 M C5HN (Kb = 1.7 x 10-) with 100.0 mL of 0.435 M HCI. What…

A: Total volume of solution can be calculated by adding volume of  C5H5N and HCl.

Q: A solution contains 118.5 g KI per liter solution. Calculate the concentration in a) % w/v b) % w/w…

A: Given: mass of KI = 118.5g Volume of solution = 1 L Density = 1.078 g/mL

Q: In the standardization of HCl solution, a pale pink end-point using phenolphthalein indicator was…

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Q: Calculate the molarity of the dilution made with 25.0mL of 0.220M stock NaCl solution with a final…

A: Initial valume = 25.0ml Molarity = 0.220M Final volume= 2.00L

Q: A 5.00 ml sample of vinegar was titrated with 0.08751 M NAOH. The sample requires 22.31 mL of NaOH…

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Q: 4. How many grams of Cu(NO3)2 (S) are needed to make 0.500 L of 0.200 M solution? a. b. What is the…

A: This is a question with multiple subparts and according to bartleby guidelines I need to solve only…

Q: An aqueous solution is prepared by mixing 240.0 mL of 1.700 M NiCl2 with 160.0 mL of 2.200 M NaCl…

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Q: A 0.2602 g sample of an unknown monoprotic acid requires 12.23 mL of 0.1298 M NAOH solution to reach…

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Q: What is the normality of a solution of KMnO4 , if 100.26 ml will oxidize that wt. of KHC2O4.H2C2O4…

A: Volume of KMnO4 required to titrate KHC2O4.H2C2O4 .2H2O  = 100.26ml Normality of KMnO4 = ??…

Q: what minimum mass of cobalt (ii) nitrate must be added

A: Given: Volume of cobalt (II) nitrate is 60.0 mL or 0.060 L Molarity of phosphate solution is 0.0890…

Q: How would you prepare  x 10 ^2 mL of 0.9 M NaOH solution, starting from 5.01 M stock solution?…

A: Given that, M1=5.01 M, V1=? M2=0.9 M , V2= 2×102 ml = 200 ml  then,

Q: A solution of 250.0 mL of a 0.200 M NaHCO3 solution is to be prepared. The solution is diluted by…

A: In the given problem, the molarity of the serially diluted solution can be calculated by using the…

Q: A 10.00 mL sample of vinegar is titrated with 0.187M NaOH and requires 16.33mL of NaOH to reach the…

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Q: A solution was prepared by dissolving 0.000245 Kg of H2SO4 in water to give 500 ml. Calculate he…

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Q: To determine the concentration of a solution of hydrochloric acid, a 125.0-mL sample is placed in a…

A: Using Molarity equation  M1V1                    =                   M2V2 [Ba(OH)2]…

Q: 758 mL of 1.OOM hydochlonic acid is exacty neatralized with O,150 M potassium hydroxide Solution.…

A: Given :- concentration of HCl = 1.00 M               Volume of HCl = 758 mL…

Q: What mass of Na2CrO4  is required to precipitate all of the silver ions from 20.0 mL of a 0.700 M…

A: Given: Volume of AgNO3 = 20.0 mL = 0.02 L Concentration of AgNO3 = 0.700 M   Chemical reaction…

Q: Calculate the morality of a solution prepared by dissolving 1.56g of gascous HCI in enough water to…

A: Molarity is defined as  Molarity = moles of solute / volume of solution in L Since solute is HCl…

Q: What volume of 0.200 M Na2CO3 (MW = 106) solution contains 53.0 g of Na2CO3?

A: Given solution of Na2CO3 has concentration of 0.200 M and the solution contains 53.0 g of Na2CO3.…

Q: Exactly 42.35 mL H2SO4 is neutralized with 21.15 mL of 0.500 M NaOH, what is the normality of H2SO4?

A: Given: Volume of H2SO4 V1=42.35mL Volume of NaOH V2= 21.15mL Molarity of NaOH M2= 0.500M To find:…

Q: A 10.00 ml sample of a solution of hydrofluoric acid, HF, is diluted to 500.00 ml. A 20.00 ml…

A: At equivalence point the molarity of both HF and NaOH becomes equal in the titrated solution. From…

Q: A 0.128 g sample of KHP (HKC8H4O4) required 28.54 mL of NaOH solution to reach a phenolphthalein…

A: Mass of HKC8H4O4 = 0.128 g Molar mass of HKC8H4O4 = 204.44 g/mol So, Number of moles  = 0.128 g /…

Q: What will the molarity be of the resulting solutions made by mixing the following? Assume that…

A: The following are the conditions of the solutions and the objective is to find the resulting…

Q: A 300 mL solution containing 1.85 g CaCl2 is mixed with a 500 mL solution containing 1.95 g NaCl.…

A: The total volume of the solution is 800mL and the amount of CaCl2 is 1.85g and the amount of NaCl is…

Q: What weight of KCN is equivalent to 30.00 mL of AgNO3 solution containing 15.00 g/liter (a) by the…

A: We have to find weight of KCN is equivalent to 30.00 mL of AgNO3 solution containing 15.00 g/liter…

Q: A 25.0 ml portion of a 0.2450 M NH4Cl solution is added to 55.5 mL of 0.1655 M FeCl3. What is the…

A: Given  Molarity of NH4Cl = 0.2450 M  Volume of NH4Cl solution = 25.0 mL = V1 0.025 L  Moles of NH4Cl…

Q: what mass of Na2CrO4 is required to precipitate all of the silver ions from 55.0 mL of a 0.300 M…

A: Given:Molarity of AgNO3 = 0.300 M.Volume of AgNO3 = 55.0 mL = 0.055L.The balanced chemical reaction…

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: How many liters of .225 M Na2S solution would be required to react completely with 81.8 g…

A: Given: Molarity = 0.225 M     Fe (C2H3O2)3 = 81.8 g Volume of solution is calculated as