A chemist must prepare  550.mL  of  60.0mM aqueous potassium dichromate  K2Cr2O7 working solution. He'll do this by pouring out some  0.403molL aqueous potassium dichromate stock solution into a graduated cylinder and diluting it with distilled water. Calculate volume in mL of potassium dichromate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.

Q: A chemist prepares a solution of sodium chloride (NaCl) by weighing out 2.346 g of sodium chloride…

A: Concentration (w/V) = wt of solute in gram /volume of solution in Litre (V ltr)

Q: A chemist must dilute 39.5mL of 664.mM aqueous barium acetate BaC2H3O22 solution until the…

A:

Q: Calculate the volume in mL of the iron(III) bromide stock solution that the chemist should pour out.

A:

Q: A chemist prepares a solution of aluminum chloride (AICI,) by weighing out 49.9 g of aluminum…

A: Given: grams of aluminum chloride = 49.9g Volume = 400mL The concentration value in g/dL is…

Q: A chemist must prepare 625.mL of 149.μM aqueous magnesium fluoride MgF2 working solution. He'll…

A: Dilution is the solution obtained by adding more solvent in the stock (more concentrated) solution.…

Q: A chemist prepares a solution of barium chloride (BaCl,) by measuring out 17.8 umol of barium…

A: Given that : Micromoles of barium chloride (BaCl2) = 17.8 μmol The volume of solution = 150 mL

Q: A chemist must prepare 125. mL of 865. mM aqueous barium chlorate (Ba(CIo,)) working solution. He'll…

A: Moles of both solutions will be same. M1 × V1 = M2 × V2

Q: mol aqueous A chemist must prepare 675. mL of 195. mM aqueous aluminum sulfate (Al, (SO,) ) working…

A: Given : Concentration of Al2(SO4)3 to be prepared = 195 mM = 0.195 M                  (since 1 M…

Q: A chemist prepares a solution of potassium dichromate (K,Cr, O,) by measuring out 63.7 µumol of…

A:

Q: A chemist must prepare 500. mL of 1.00 M aqueous barium chlorate (Ba(Cl03),) working solution. He'll…

A: From the provided stock solution of 1.22M Barium chlorate solution, 500mL of 1M aqueous barium…

Q: A chemist must prepare 0.100 L of 1.00 M aqueous barium chloride (BaCl,) working solution. He'll do…

A: Here, dilution of stock solution is occurring, which means a dilute solution os prepared from a…

Q: A chemist must dilute 18.7mL of 23.4μM aqueous mercury(II) iodide HgI2 solution until the…

A:

Q: Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person…

A: Solution :       The molarity of the solution is defined as the number of moles of solute dissolved…

Q: A chemist must dilute  40.6mL  of  105.μM  aqueous silver(II) oxide  AgO  solution until the…

A: Given: Initial concentration (original solution), M1 = 105 μM The initial volume (original…

Q: A chemist must prepare 575.mL of 1.00M aqueous sodium carbonate Na2CO3  working solution. She'll do…

A: When a concentrated solution (stock solution) of concentration C1 and volume V1 is diluted by adding…

Q: A chemist must dilute  53.4mL  of  3.91M  aqueous iron(III) bromide  FeBr3  solution until the…

A: Since the chemist is diluting the solution by just adding the water. Hence the moles of FeBr3 will…

Q: A chemist must prepare 500. mL of 95.0 mM aqueous potassium permanganate (KMNO,) working solution.…

A: To approach this problem, the concept that we use is the concept of using equal milimoles of the…

Q: A chemist must prepare 1000. mL of 320. mM aqueous calcium bromide (CaBr,) working solution. He'll…

A: Given, a chemist prepare a solution of calcium bromide(CaBr2 )from itsstock solution as…

Q: A chemist must dilute 33.3 mL of 592. mM aqueous barium chlorate (Ba(CIO,)) solution until the…

A: During dilution the formula to be used is V1 S1 = V2 S2 where, V1  = initial volume S1 = initial…

Q: A chemist must dilute 20.6 mL of 22.0 mM aqueous aluminum sulfate (Al, (SO,)) solution until the…

A: In dilution, the millimoles or moles of solute remains same before & after dilution (Dilution…

Q: A chemist must prepare 275. mL of 325. mM aqueous sodium carbonate (Na, CO,) working solution. He'll…

A: Answer:

Q: A chemist prepares a solution of iron(III) bromide (FeBr,) by weighing out 152.1 g of iron(III)…

A: Concentration: The concentration of a solution can be represented in several ways like g/L, ppm.…

Q: A chemist prepares a solution of sodium hyposulfate (Na₂S₂O3) by measuring out 200. μmol of sodium…

A: A homogeneous mixture of two or more substances is known as a solution. The species which present in…

Q: A chemist prepares a solution of potassium iodide (KI) by weighing out 37.1 g of potassium iodide…

A: Interpretation - To determine the concentration of potassium iodide solution in ( g/dL ) when a…

Q: Calculate the volume in mL  of the potassium dichromate stock solution that the chemist should pour…

A:

Q: A chemist must dilute 52.1mL of 1.25M aqueous sodium carbonate Na2CO3 solution until the…

A: Given,V1 = 52.1 mlN1 = 1.25 MN2 = 1.00 MV2 = ?

Q: A chemistry student weighs out 0.0856 g of citric acid (H,C H,0,), a triprotic acid, into a 250. mL…

A: Given, amount of citric acid =0.0856 gramvolume of citric acid solution =250 mL =0.250 Lis titrated…

Q: A chemist prepares a solution of potassium dichromate (K₂Cr₂O₂) by measuring out 9.94 μmol of…

A: A homogeneous mixture of two or more substances is known as a solution. The species which present in…

Q: To identify a metal, an experimenter placed, 4850cg sample in a graduated cylinder. He then poured…

A:

Q: A chemistry student needs 5.00 g of acetic acid for an experiment. She has available 250. g of a…

A: Given,  250 g of a 15.8% w/w solution of acetic acid in ethanol. And 5.00 g of acetic acid is needed…

Q: A chemist must dilute 20.3 mL of 1.37 M aqueous calcium bromide (CaBr,) solution until the…

A: Final volume on dilution can be calculated by the following formula. M1V1=M2V2V2=M1V1M2M1=initial…

Q: A chemist prepares a solution of barium acetate BaC2H3O22 by measuring out 83.g of barium acetate…

A: Given that, A chemist prepares a barium acetate [(CH3COO)2Ba] solution in a 250 mL volumetric flask…

Q: A chemist must prepare 700. mL of 17.0 µM aqueous zinc oxalate (ZnC,0,) working solution. She'll do…

A:

Q: A chemist must prepare 450.mL of 370.mM aqueous potassium permanganate KMnO4 working solution.…

A: We have to calculate the volume of stock solution.

Q: Aqua regia is an acid mixture that can be used to dissolve gold. Aqua regia has a density of 1210.…

A:

Q: A chemistry student weighs out 0.0852 g of phosphoric acid (H, PO), a triprotic acid, into a 250. mL…

A: Given data :

Q: A chemist must dilute 15.5 mL of 5.62 M aqueous sodium chloride (NaCl) solution until the…

A: Given, initial concentration of aqueous solution of NaCl =5.62 Minitial volume of solution =15.5…

Q: A chemist must dilute 14.9mL of 1.88M aqueous sodium carbonate (Na2CO3) solution until the…

A: Given : Initial concentration of Na2CO3 = 1.88 M Initial volume of Na2CO3 solution = 14.9 mL And…

Q: mmol A chemist makes 460. mL of magnesium fluoride (MgF₂) working solution by adding distilled water…

A:

Q: Calculate the volume in liters of a 1.7 × 10 mmol/L mercury(I) chloride solution that contains 700.…

A: Molarity is defined as total number of moles of solute present in 1000ml of solution . Given=…

Q: A chemist must prepare 275. mL of 5.00 mM aqueous calcium sulfate (CaSO,) working solution. He'll do…

A:

Q: A chemist must prepare 800. mL of 69.0 µM aqueous mercury(II) iodide (HgI,) working solution. He'll…

A: Given : Volume of solution to be prepared = 800 mL Concentration of HgI2 = 69.0 µM = 69.0 X 10-6 M…

Q: A chemist must prepare 350.mL of 235.mM aqueous potassium permanganate KMnO4 working solution.…

A:

Q: umol A chemist must prepare 450. mL of 15.0 µM aqueous mercury(II) iodide (Hgl,) working solution.…

A: Initial volume ,V1 =  Initial Molarity = 24.0µM Final volume,V2 = 450.0mL Final Molarity ,M2  =…

Q: A chemist prepares a solution of potassium dichromate (K₂Cr₂O7) by measuring out 43.6 µmol of…

A: Given :-  No.of moles of K2Cr2O7 = 43.6 umol  Volume of solution = 300. mL  To calculate :…

Q: A chemistry student weighs out 0.282 g of ascorbic acid (H,C¸H¸O), a diprotic acid, into a 250. mL…

A: Given : Mass of H2C6H6O6 = 0.282 g And concentration of NaOH = 0.2000 M The neutralisation reaction…

Q: A chemist must dilute 82.6mL of 51.0 mM aqueous potassium permanganate  KMnO4 solution until the…

A: In the dilution process, the relationship between initial and final concentrations and volumes of…

Q: A chemist must dilute 88.2mL of 6.18mM aqueous copper(II) fluoride CuF2 solution until the…

A: If a concentrated solution of Molarity M1 and volume V1 is diluted by adding water to a solution of…

Q: A chemist prepares a solution of iron(III) bromide (FeBr,) by weighing out 152.1 g of iron(III)…

A: Given, mass of iron(iii) bromide (FeBr3) = 152.1 g            volume of water added (solution) =…

Q: A chemist prepares a solution of mercury(II) iodide (Hgl,) by weighing out 7.148 mg of mercury(II)…

A: Given: weight of HgI2 is 7.148 mg volume of the solution is :150 ml No. of grams  of solute present…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.