A chemist prepares a solution of potassium bromide    KBr    by measuring out  0.17g  of  KBr  into a  300.mL  volumetric flask and filling to the mark with distilled water.   Calculate the molarity of  Br−  anions in the chemist's solution.   Be sure your answer is rounded to  2  significant digits.

Q: A chemistry student weighs out 0.110 g of hypobromous acid (HBrO) into a 250. mL volumetric flask…

A: • Concentration = No.of MolesVolume• No.of Moles = Concentration x Volume•  No.of gram Equivalent =…

Q: In the lab, a student makes a solution of CaCl 2 by dissolving 9.0 grams of solid in 425 mL of…

A: We have given that  Mass of CaCl2 = 9 gram  Volume of solution = 425ml = 0.425L  We know that…

Q: A 78.00 mL sample of 0.76 M nitric acid is introduced into a flask, and water is added until the…

A:

Q: A reagent bottle is labelled 3.00 M sulfuric acid. You titrate a 25 mL sample with 1.58 N sodium…

A: neutralisation reaction are reaction where the acid and base react to form a salt and water here we…

Q: A chemist prepares a solution of copper(II) sulfate CuSO4  by measuring out  64.8g  of copper(II)…

A:

Q: Exactly 6.21 g of MgCl2 (molar mass = 95.2 g/mol) was dissolved in water.  An analysis indicated…

A:

Q: One brand of laundry bleach is an aqueous solution containing 4.00% sodium hypochlorite (NaOCl) by…

A: Given that: NaOCl solution = 4% by mass (4 g NaOCl/100 g solution) x (1 mol NaOCl/  74.44 g NaOCl) =…

Q: . Solid sodium fluoride is slowly added to 125 mL of a 0.111 M calcium bromide solution until the…

A: The solubility product of salt is a constant at a given temperature irrespective of the source from…

Q: A chemist prepares a solution of copper(II) sulfate CuSO4 by measuring out 7.84g of copper(II)…

A:

Q: A chemist prepares a solution of silver(I) perchlorate (AgCIO 4) by measuring out 1.05 x 10° umol of…

A: When you talk about concentration in μmol/L that means no of micro moles present in one liter of…

Q: How much lithium chloride (in grams) is needed to make 115 mL of a 15.7 M solution? The molar mass…

A: Given Molarity = 15.7 M Volume of solution = 115 ml = 115×10-3 L molar mass of lithium chloride =…

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

A:

Q: chemist prepares a solution of nickel(II) chloride NiCl2 by measuring out ×1.010^2μmolof nickel(II)…

A:

Q: An analytical chemist weighs out 0.133 g of an unknown diprotic acid into a 250 mL volumetric flask…

A:

Q: 1. A solution of sodium bicarbonate is prepared by adding 45.00 g of sodium bicarbonate to a 1.00-L…

A:

Q: A chemist adds 320.0mL of a 2.1 M calcium bromide (CaBr2) solution to a reaction flask. Calculate…

A: From the given volume and molarity of the solution, moles of calcium bromide can be calculated as

Q: How many moles of ammonia are in 500. mL of a 2.25 M aqueous ammonia solution? Find the numerical…

A: we are  required to find the number of moles of ammonia from molarity and volume

Q: Calculate the molarity of an aqueous solution that is 15.6% by mass calcium chloride. You might need…

A:

Q: A chemist prepares a solution of silver perchlorate AgClO4 by measuring out 0.58kg of silver…

A: Mass of silver perchlorate=0.58 kg=580 g  Molar mass of silver perchlorate = 207.319 g/mol Moles =…

Q: A chemist prepares a solution of iron III  chloride    FeCl3    by measuring out  0.40g  of…

A: Given : mass of FeCl3 dissolved = 0.40 g And volume of solution prepared = 100 mL = 0.100 L…

Q: In the lab, a student makes a solution of KOH by dissolving 52.0 grams of solid in 255 mL of water.…

A:

Q: An aqueous solution of manganese (II) iodide,MnI2,is made by dissolving 21.1 grams of manganese(II)…

A: Weight/Volume percentage = it tells about amount of solute present per 100 mL of solutionWeight of…

Q: An analytical chemist weighs out 0.115 g of an unknown monoprotic acid into a 250 mL volumetric…

A: Given; The volume of the NaOH solution=8.5 mL = 0.0085 L. The molarity of NaOH = 0.1500 M. The given…

Q: A chemistry student weighs out 0.212 g of lactic acid (HC,H,03) into a 250. mL volumetric flask and…

A: Given, mass of lactic acid = 0.212 g            volume of solution  250. mL            molarity of…

Q: n the laboratory you dissolve 12.2 g of magnesium iodide in a volumetric flask and add water to a…

A:

Q: When solutions of silver nitrate and sodium chloride are mixed, silver chloride precipitates out of…

A: Consider the given balanced equation is as follows; Reaction:       AgNO3aq     +    NaClaq      →…

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

A: Answer

Q: A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the…

A:

Q: The solubility of aluminum sulfate (Al2(SO4)3) in water is 34.22 g per 100.0 mL of solution at a…

A:

Q: If you are asked to prepare a 3.10 M NaOH solution in the laboratory, to what volume should you…

A:

Q: A 77.00 mL sample of 0.59 M nitric acid is introduced into a flask, and water is added until the…

A:

Q: 5. A solution of barium hydroxide, Ba(OH)2, contains 4.285 g of barium hydroxide in 100.0 mL of…

A:

Q: What is the concentration of the diluted solution?

A:

Q: An analytical chemist weighs out 0.091 g of an unknown triprotic acid into a 250 mL volumetric flask…

A: During a Titration, at equivalence point , the substance reacts completely with the added substance.…

Q: A sample of concentrated hydrochloric acid (HCl) is 37.0 % HCl by mass. Calculate the molarity of…

A: Given:37.0% HCl by mass density is 1.18 g/ml formula : Molarity (M)= (% by mass x 10 x Density…

Q: How many moles and numbers of ions of each type are present in the following aqueous solution? 51.7…

A: Given : Concentration of MgCl2 = 1.35 M And volume of MgCl2 solution = 51.7 mL = 0.0517 L…

Q: A 9.33 % solution of sulfuric acid has a density of 1.07 g/mL.  What is the molarity (M) of this…

A: Given: The density of 9.33 % solution of sulfuric acid is 1.07 g/mL The mass percent is 9.33%

Q: Determine the volume of 0.145 M NaOH solution required to neutralize each sample of hydrochloric…

A: According to the equation,MV = constant.Then,M1V1 = M2V2M1 = Molarity of NaOHV1 = Volume of NaOH.M2…

Q: Na2CO3(aq) + CaCl2(aq) – → 2 NaCl(aq) + CaCO3(s) Calculate the volume (in mL) of 0.100 M Na,CO3…

A: The balanced reaction taking place is given as, Given: Mass of CaCO3 produced = 1.00 g. And the…

Q: In the lab, a student makes a solution of NaOH by dissolving 49.0 grams of solid in 195 mL of water.…

A:

Q: molarity of a solution made from 5.906 g sodium chloride (MM=58.44 g/mol) dissolved in water to a…

A:

Q: A chemist prepares a solution of nickel(II) chloride NiCl2 by measuring out 97.μmol of nickel(II)…

A: Molarity of a solution is defined as the amount of solute present in one litre of solution. It is…

Q: Assuming the volume of a pink freezer pop solution is 30.0 ml and the concentration of red pop is…

A: Given,  Volume = 30 ml                 = 30×10-3L = 0.03L Concentration of red pop = 3.03g/L To find…

Q: A chemist adds 195.0 mL of a 0.0685 mM barium acetate (Ba(C,H;02),) : solution to a reaction flask.…

A:

Q: A chemistry student weighs out 0.0960 g of phosphoric acid (H,PO4), a triprotic acid, into a 250. mL…

A: Given: Mass of H3PO4  = 0.0960 g Volume of H3PO4 solution = 250.0 mL = 0.250 L Molar mass of H3PO4 =…

Q: If 426 mL of 0.204 M HCI solution is needed to neutraize a solution of Ca(OH)2. how many grams of…

A:

Q: chemist prepares a solution of silver(I) nitrate AgNO3 by measuring out 6.4102 x 10^2 μmol of…

A: Molarity is defined as total number of solute dissolve in one litre of solution Molarity…

Q: How many grams of sodium carbonate are present in 25.7 mL of a solution that is 24.0% sodium…

A: Mass of solution can be calculated as follows:

Q: An analytical chemist weighs out 0.264 g of an unknown diprotic acid into a 250 mL volumetric flask…

A: Given data is as follows: The mass unknown diprotic acid = 0.264 g    The volume of water = 250 mL =…

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

A: Mass/Volume concentration is defined as mass of solute present per mL of solution. Concentration…