A chemist makes 820. mL of sodium thiosulfate (Na2S₂O3) working solution by adding distilled water to 280. mL of a 3.70 M stock solution of sodium thiosulfate in water. Calculate the concentration of the chemist's working solution. Be sure your answer has the correct number of significant digits.

Q: A chemist wants to make 6.5 L of a 0.280M CaCl2 solution. What mass of CaCl2 (in g) should the…

A: Molarity of a solution is defined as the number of moles of solute present in one litre of the…

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: A chemistry student weighs out 0.152 g of ascorbic acid (H,C,H,O), a diprotic acid, into a 250. mL…

A: Here we first calculate molarity of ascorbic acid, then use total volume strength equation.

Q: A chemistry student weighs out 0.127 g of chloroacetic acid (HCH2ClCO 2) into a 250. mL volumetric…

A: We have to calculate the volume of NaOH needed to reach equivalence point

Q: You have been provided with a 35.7 mL sample of lithium hydroxide (LiOH) of unknown concentration.…

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Q: A chemist prepares a solution of silver(II) oxide (AgO) by measuring out 0.00926 µmol of silver(II)…

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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: chloride    FeCl3    by measuring out  2.70g  of  FeCl3  into a  300.mL  volumetric flask and…

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Q: (Zn(NO3)₂) by measuring out 100. g of zinc nitrate into a 150. mL volumetric flask and A chemist…

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Q: A chemistry student weighs out 0.0353 g of acetic acid (HCH,CO,) into a 250. mL volumetric flask and…

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Q: Suppose 1.78 g of sodium bromide is dissolved in 350. mL of a 0.30 M aqueous solution of silver…

A: Molarity is one of the concentration terms used to define the amount of a solute dissolved in a…

Q: A chemistry student weighs out 0.105 g of sulfurous acid (H,SO,), a diprotic acid, into a 250. mL…

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

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Q: Suppose 2.04g  of potassium chloride is dissolved in  300.mL  of a  40.0mM  aqueous solution of…

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Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Hi, as you have posted 2 questions and have not mentioned which one you want us to solve for you.…

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

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Q: A chemist prepares a solution of mercury(II) iodide (Hgl,) by measuring out 0.00569 µmol of…

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Q: A chemist must prepare 375. mL of 890. µM aqueous copper(II) fluoride (CuF,) working solution. He'll…

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Q: nist prepares a solution of copper(II) sulfate (CuSO4) by measuring out 66.8 µmol of copper(II)…

A: Molarity is defined as number of mole of substance divide by volume of solution in liter

Q: A)  Calculate the molarity 12.21 mg KI in 107.6 mL of solution         Express your answer using…

A: Molarity of a solution is defined as the number of moles of solute to the total volume of solution.

Q: A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 0.0029 µmol of zinc oxalate…

A: Given :-  No.of moles of ZnC2O4 = 0.0029umol  Volume of solution = 150. mL  To calculate :-…

Q: A student dissolved 4.52 g of Mg(NO3)2(s) in enough water to make 400 mL of solution. What is the…

A: Given: Mass of Magnesium nitrate = 4.52g Volume of Solution = 400mL

Q: A chemist prepares a solution of sodium bromide   NaBr    by measuring out  0.25g  of  NaBr  into…

A: Given :-  Mass of NaBr = 0.25 g  Volume of solution = 50. mL  To calculate :-  Molarity of Br- ions

Q: A chemist adds 390.0mL of a 8.14*10^−5M zinc oxalate ZnC2O4 solution to a reaction flask. Calculate…

A: We have to first calculate moles of zinc oxalate

Q: A chemist prepares a solution of potassium bromide (KBr) by measuring out 1.75 g of KBr into a 250.…

A: Mass of KBr = 1.75 g  Volume of solution = 250 mL = 0.25 L

Q: A chemist adds 310.0 mL of a 0.045 mmol/L sodium thiosulfate (Na₂S₂03) solution to a reaction flask.…

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Q: A chemist prepares a solution of mercury(I) chloride (Hg₂Cl₂) by measuring out 1.96 mg of mercury(1)…

A: The mass of mercury (I) chloride (Hg2Cl2) is 1.96 mg.The volume of the solution is 500. mL.To find…

Q: Calculate the mass (in grams) of oxalic acid (H2C2O4) needed to make 100.0 mL of a 0.250 M solution.…

A:

Q: A chemist prepares a solution of aluminum sulfite (Al, (Al₂(SO3)3) by measuring out 56.8 μmol of…

A: Given, moles of Aluminium sulfite (Al2(SO3)3) = 56.8 µmol = 56.8 × 10-6 mol Volume of the volumetric…

Q: A chemist adds 75.0 mL of a 3.20 g/dL potassium dichromate (K,Cr,0, solution to a flask. Calculate…

A: Concentration of potassium dichromate(K2Cr2O7) = 3.20g/dL Volume of the solution = 75.0ml = 75.0ml ×…

Q: In a titration experiment, 12.5 mL of 0.500 M H₂SO4 neutralized 48.0 mL of NaOH. What was the…

A:

Q: A chemist adds 430.0mL of a 9.76 M silver perchlorate AgClO4 solution to a reaction flask.…

A: Given information: Volume = 430.0 mL Concentration of silver perchlorate = 9.76 M

Q: A chemistry student weighs out 0.0598 g of acrylic acid (HCH₂CHCO₂) into a 250. mL volumetric flask…

A: Reaction is  HCH2CHCO2 + NaOH→ CH2CHCO2Na      + H2O   Given : mass of acrylic acid = 0.0598 g…

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A: Calculate the mass (in grams) of oxalic acid (H2C2O4) needed to make 100.0 mL of a 0.250 M solution.…

Q: Determine the volume of hexane (C,H14) in liters that contains 6.53 x 1025 molecules of hexane. The…

A: A numerical problem based on mole concept, which is to be accomplished.

Q: Suppose 2.92 g of copper(II) acetate is dissolved in 50. mL of a 0.60 M aqueous solution of sodium…

A: Step 1: Calculate the number of moles of copper(II) acetate: First, we need to convert the mass of…

Q: A chemist adds 110.0 of a 1.63 molcalcium bromide (CaBr 2 ) solution to a reaction flask Calculate…

A: I assume what the chemist added is: 110.0 mL of a 1.63 mol/L (or 1.63 M) calcium bromide (CaBr2)…

Q: A chemist prepares a solution of silver(I) nitrate (AGNO,) by measuring out 245. µmol of silver(I)…

A: Concentration in terms of Micromole per litre...

Q: Acetaldehyde (C₂H4O), an oxidation product of ethanol, is found in every type of wine. On average,…

A: Volume of bottle = 750 ml = 0.750 L

Q: A chemist prepares a solution of vanadium(III) bromide (VBr3) by measuring out 0.10 g of VBr3 into a…

A: Given: The mass of VBr3 = 0.10 g The volume of water = 100 mL We have to calculate the molarity of…

Q: A chemistry student weighs out 0.0513 g of sulfurous acid (H,SO,), a diprotic acid, into a 250. mL…

A: Given : Mass of H2SO3 taken = 0.0513 g And concentration of NaHH taken = 0.1500 M Molar mass of…

Q: A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 5.78 mg of zinc oxalate into…

A:

Q: A chemist prepares a solution of nickel (II) chloride (NiC1₂) by measuring out 250. g of nickel (II)…

A: The mass of nickel (II) chloride (NiCl2) is 250. g.The volume of the solution is 400. mL.To find the…

Q: A chemist adds 125.0 mL of a 0.183M potassium dichromate (K,Cr,O,) solution to a reaction flask.…

A: Mass of Potassium Dichromate can be calculated in the following way:

Q: A chemistry student weighs out 0.181 g of phosphoric acid (H,PO), a triprotic acid, into a 250. mL…

A: First of all,we calculate the Molarity of phosphoric acid. Molarity is the number of moles of solute…

Q: A chemist prepares a solution of silver nitrate (AgNO3) by measuring out 121. g of silver nitrate…

A: The concentration or molarity of the solution is calculated using the formulaUse the molar mass of…

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.