10.0mL of concentrated H3PO4 (aq) is diluted to the final volume of 250 mL. Then 150 mL of the diluted H3Po$ (aq) is titrated with 0.0455 M NaOH (aq) so that one of the products is Na2HPO4 (aq). It takes 24.35mL NaOH (aq) to complete the reaction. Calculate the molarity of H3PO4 (aq) in the concentrated solution.

Q: A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M HCI(aq). The equation for…

A: Mass percentage of a compound in the solution is the term used to express concentration of the…

Q: What is the molarity of the solution?

A: Molarity = mole of solute / volume of solution

Q: In the reaction between KCl(aq) and AgNO3(aq), a precipitate of AgCl(s) will form. What mass (in…

A: Molarity of AgNO3 solution = 0.220 Volume of AgNO3 solution = 27.2*10-3 Molar mass of KCl= 74.55…

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A: Given that a student mixed 100.00 mL of BaOH2 with 500.00 mL of 0.0200 M NaOH in a conical flask to…

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A:

Q: Federal regulations set an upper limit of 50 parts per million (ppm) of NH3 in the air in a work…

A: Moles of NaOH that reacted with remaining HCl is Moles of NaOH = Molarity (M) × Volume (L) n= 0.0588…

Q: Consider Palmitic acid C16H32O2, a common fatty acid used in the manufacture of soap. A solution of…

A: Mass of palmitic acid taken = 112 g => Moles of palmitic acid = mass/Molar mass       = 112 g /…

Q: A stock solution of potassium permanganate (KMNO4) was prepared by dissolving 10.0 g KMNO4 with DI…

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

Q: A 0.3146 g sample of a mixture of NaCl(s) and KBr(s) was dissolved in water. The resulting solution…

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Q: About 6x 10°g of goldis thought to be dissolved in the oceans of the world. If the total volume of…

A: Given, Mass of gold = 6*109g Volume of ocean = 1.5 *1021L

Q: What volume (in mL) of 0.436 mol/L calcium hydroxide, Ca(OH)2(aq), is needed to completely…

A: Answer: the volume of calcium hydroxide [Ca(OH)2] solution needed is 16.31 mL.

Q: A 66.7 mL sample of 18.0 M sulfuric acid was diluted with enough water in a volumetric flask to make…

A: The solution is as follows:

Q: The following chemical reaction takes place in aqueous solution: 2 AGNO3(aq)+Na,S(aq) →Ag,S(s)+2…

A: 2AgNO3(aq) + Na2S(aq) ---------> Ag2S(s)   + 2NaNO3(aq)

Q: 11.A sample of 10 g of potassium iodide is dissolved in a beaker. Then it is poured in a volumetric…

A: Given : A sample of 10 g of potassium iodide is dissolved in a beaker. Then it is poured in a…

Q: By pipet, 10.00 mL  of a 0.823 M stock solution of potassium permanganate (KMnO4) was transferred to…

A:

Q: Lactic acid (HC3H5O3) is a monoprotic acid that forms when milk becomes sour. A 40.00 mL sample of…

A:

Q: How many grams of KIO3 is required to prepare 250 mL, 0.01 M KIO3(aq) solution?

A: Molarity (M) of a solution is defined as the number of moles of solute dissolved per volume of the…

Q: The following chemical reaction takes place in aqueous solution: Fe,(So4),(aq)+3 K,S(aq) →Fe,S3(s)+3…

A:

Q: In the laboratory, hydrogen gas of good purity can most easily be obtained by the reaction of a…

A:

Q: Sodium carbonate is often added to laundry detergents to soften hard water and make the detergent…

A: Given,Concentration of Ca2+ = 3.8×10−3 M = 3.8×10−3 mol/LConcentration of Mg2+ = 1.1×10−3 M =…

Q: What mass of sodium chloride. NaCI, should be dissolved in enough water to make up 300 cm3 of 1.00 M…

A: Given, 300 cm3 of 1.00 M NaCI(aq)

Q: What concentration of Zn is present in solution when 5.93 g of zinc metal is used to displace…

A:

Q: Consider Palmitic acid C16H32O2, a common fatty acid used in the manufacture of soap. A solution of…

A: Given: Given: Amount of the solute, mP = 112 g Volume of the solvent, VB = 725 mL = 0.725 L Also,…

Q: You have a solution which is 45.6% by mass isopropyl alcohol (MM = 60.11 g/mol) in water. The…

A:

Q: A 12.5 mL portion of a base solution of an element from Group 2A is diluted to 500 mL, and the…

A: Initial volume of base solution (of elements group 2A ) = 12.5 ml  New Volume of base solution = 500…

Q: To determine , by gravimetric analysis, the concentration of barium ions (Ba2+) in a given solution,…

A:

Q: A 36.0 mL sample of aqueous sulfuric acid was titrated with 0.250 M ROH(aq) until the acid-base…

A: Molarity equation The equation that is used to calculate the concentration of acid or base in a…

Q: Consider Palmitic acid C16H32O2, a common fatty acid used in the manufacture of soap. A solution of…

A: The mass of Palmitic acid =112 g The molar mass of palmitic acid = 256 g/mol Moles =MassMolar…

Q: Tartaric acid, H2C4H4O6, is a diprotic acid that naturally occurs in the production of wine. Jose…

A: Given, mass of KHP=3.001 g Volume of NaOH=35.21 mL

Q: concentration, if you have an available 2M stock solution of Palmitic acid? How many mL of the 2M…

A: Here solute is palmitic acid and solvent is benzene Amount of solute mp               = 112g Volume…

Q: A particular solution of NaOH is supposed to be approximately 0.100 M. To determine the exact…

A:

Q: A 36.0 mL sample of aqueous sulfuric acid was titrated with O.250 M KOH(aq) until the acid-base…

A: The volume of sulfuric acid = 36.0 mL The molarity of KOH = 0.250 M The mass of residue formed after…

Q: A student mixed 100.00 mL of Ba(OH)2(aq) (unknown molarity) with 500.00 mL of 0.0200 M NAOH(aq) in a…

A: Solution -

Q: A concentrated perchloric acid solution is 69.8% HCIO4 by mass and its density is 1.68 g mL-1. What…

A: Using molarity formula and equation of dilution we can solve this problem.

Q: diluted

A: mmoles of HCl = ( Molarity ) • ( volume )  mmoles of HCl = 3.00molL-1 • 25.00mL  mmoles of HCl =…

Q: 12.) A 2.00g sample of limestone was dissolved in hydrochloric acid and all the calcium present in…

A:

Q: On their third titration trial, the CHM 111 student used 18.80 mL of 0.205 M NaOH(aq) to neutralize…

A: Balanced Reaction HCl (aq) + NaOH (aq) ---> H2 O (l) + NaCl(aq)  Volume of NaOH = 18.80 mL…

Q: A 10.0 g of calcium chloride dihydrate, CaCl2•2H2O, in enough water to make exactly 500.0 mL of…

A: Given  Mass of solute( CaCl2.2H2O) = 10.0 g Volume of solution = 500.0 mL    = (500/1000) L We know…

Q: The amount of (aq) in a solution can be determined by titration with a solution containing a known…

A: 1) As the balanced chemical equation shows, 2 moles of  requires 1 mole of  ions. Thus, 1 mole of…

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A: Given that : The maximum permissible amount of cadmium in drinking water is 0.01 mg/L. We have to…

Q: You

A: You can used the formula direactly,  ( M2 • V2 ) resulting Solution = ( M1 • V1 )stock solution…

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A:

Q: A sample with a mass of 1.340 g was dissolved in water, releasing chlorine ions. The aqueous…

A: Since the AgCl precipitate is formed by reaction of Ag+ from AgNO3 and Cl- fromt he sample And since…

Q: A 36.0 mL sample of aqueous sulfuric acid was titrated with 0.250 M KOH(aq) until the acid-base…

A:

Q: A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M HC1(aq). The equation for…

A:

Q: How many grams of HCl(s) are there in 300 mL of 4.50% w/v HCl(aq) solution?

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Q: Lead ions can be precipitated from solution with KCI according to the following reaction: Pb (ag) +…

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Q: Sodium carbonate is often added to laundry detergents to soften hard water and make the detergent…

A: Given,3.8×10−3 M in Ca2+ and 1.1×10−3 M in Mg2+ The average capacity of a washing machine is 24.5…

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A: Here a solution is made by dissolving 6.93 g of Pb(NO3)2 to 50 ml of water and finally the volume…