An aqueous solution at 25 °C has a H,0 concentration of 4.9 x 10 'M. Calculate the OH concentration. Be sure your answer has the correct number of significant digits.

Q: If it is found that 5.00 mL of a sample has a mass of 5.250 g, what is the concentration of the…

A: Amount of substance present in 100ml of solution is defined as the percentage mass by volume. %m/v =…

Q: A chemist prepares a solution of calcium sulfate  CaSO4  by measuring out  0.341g  of calcium…

A: The solution is as follows :

Q: A chemist prepares a solution of sodium chloride NaCl  by measuring out  4.37g  of sodium chloride…

A: Concentration in mol/L is known as molarity of the solution.It can be calculated bydividing the…

Q: A chemist prepares a solution of zinc oxalate (ZnC,0) by measuring out 0.013 g of zinc oxalate Into…

A: We have given that ,  The mass of Zinc Oxalate = 0.013g Volume of Solution = 500mL =0.5 L  To find…

Q: A chemist prepares a solution of potassium dichromate (K,Cr,0,) by measuring out 16. umol of…

A: Molarity or concentration of solution may be defined as the number of moles of given solute…

Q: A chemist prepares a solution of sodium nitrate (NaNO3) by measuring out 256. μmol of sodium nitrate…

A:

Q: I have 571 mL of a 4.1 M NaCl solution. If I boil the water until the volume of the solution is…

A:

Q: 3 % H2O2 means

A: w/v % = {mass of solute (g) / volume of solution (in mL)} × 100 %

Q: Mass of Erlenmeyer flask: 25.52 g Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (lime…

A: Mass of Ca(OH) 2 = 2.92 g Density of Ca(OH) 2= 1 g/ml As we know        Density = mass/ volume We…

Q: Please answer it this is a question from the topic of chemistry "Solution"   A water solution…

A: Density of the solution tells about the quantity of the substance present per unit volume of the…

Q: A sample of mercury(I) nitride weighs 3.33 dg.  How many nitrogen atoms are in this sample?The…

A:

Q: A chemist prepares a solution of silver(I) perchlorate (AgCIO,) by measuring out 5.9 × 10´ µµmol of…

A: Concentration in terms of molarity is defined as the moles of solute present per litre of the…

Q: A chemist needs to create a 50% HCI solution. (HCt is hydrochloric acid. A "50% HCl solution"…

A:

Q: A chemist prepares a solution of calcium bromide (CaBr2) by measuring out 3.4 x 102 μmol of calcium…

A: Since concentration in mmol/L we have to find  And concentration = moles of solute / volume of…

Q: A chemist prepares a solution of copper(II) sulfate  CuSO4  by measuring out  22.μmol  of…

A: Moles of copper (2) sulphate = 22micromole Volume = 300ml

Q: A chemist prepares a solution of mercury(II) lodide (Hgl,) by measuring out 0.00033 umol of…

A: Given :-  No. of moles of HgI2 = 0.00033 umol  Volume of solution = 150. mL  To calculate :…

Q: A chemist prepares a solution of sodium thiosulfate (Na,S,0,) by measuring out 271. g of sodium…

A:

Q: Calculate the number of grams that would be needed to make 2.50 x 102 mL of 0.230 M KOH. Enter your…

A: Given: 2.50 x 102 mL 0.230 M KOH

Q: A chemist prepares a solution of potassium iodide KI by measuring out  72.g of potassium iodide…

A: Molarity:-                  It is the number of moles of the solute dissolved per litre…

Q: 3. Convert 5 feet 7 inches to millimeters.

A: Given,  Convert 5 feet 7 inches to millimeter = ?

Q: A chemist prepares a solution of potassium dichromate K2Cr2O7 by measuring out 2.0g of potassium…

A:

Q: What is the molarity of a solution prepared by dissolving 213.3 grams of Fe(OH)3 in enough water to…

A: The concentration of the solution is defined as the amount of solute present in the solution. In a…

Q: How many moles of ammonia are in 375. mL of a 2.25 M aqueous ammonia solution

A:

Q: What is the molarity of an H2S04 solution if it takes a volume of 70.0 ml of 0.50 M NaOH to fully…

A:

Q: A chemist prepares a solution of zinc nitrate (Zn(NO3)₂) by measuring out 75.5 μmol of zinc nitrate…

A:

Q: A chemist prepares a solution of silver perchlorate (AgCIO,) by measuring out 1.9 kg of silver…

A: Molarity is a concentration term for a solution. The molarity of the given solution is defined as…

Q: You are a work study student in our chemistry department. Amy, your supervisor has just asked you to…

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

Q: A chemist prepares a solution of calcium sulfate (CaSO)4 by measuring out 0.258μmol of calcium…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: Calculate the volume of water (in mL) that must be added to 64.2 mL of a 5.92 mol/L NaClO3(aq)…

A:

Q: "How many grams of copper (II) fluoride are needed to make 6.7 L of a 1.2 M solution? Make sure to…

A: Molarity of the solution = 1.2 M Volume of the solution = 6.7 L

Q: A chemist must dilute 42.4 mL of 483. mM aqueous potassium dichromate (K,Cr,O,) solution until the…

A: Given : Concentration of K2Cr2O7 to be prepared = 380 mM = 0.380 M                  (since 1 M =1000…

Q: 1. How many moles of potassium chloride, KCl, are in 35.0 g of KCl. 2. Enter your answer with both…

A: 1.) Given  mass of KCl = 35.0 g    Required data - molar mass of KCl = 74.5 g/mol   Formula used…

Q: A chemist makes 800. mL of zinc oxalate (ZnC,04) working solution by adding distilled water to 110.…

A: Dilution of the solution: On dilution of the solution with the pure water, the mole of solute…

Q: A chemist prepares a solution of sodium thiosulfate (Na,S,0,) by measuring out 111. g of sodium…

A: Answer :- 3.51 mol/L  The concentration of sodium thiosulfate solution = 3.51 mol/L…

Q: A chemist prepares a solution of barium acetate (Ba(C,H;O2),) by measuring out 54. g of barium…

A:

Q: A chemist prepares a solution of magnesium fluoride (MgF₂) by measuring out 0.058 g of magnesium…

A:

Q: If 42.7 mL of 0.202 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of…

A:

Q: A student placed 16.0 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve…

A: Given: Mass of glucose in the initial solution = 16.0 g. Volume of initial solution = 100 mL = 0.100…

Q: Arsenic was measured in Chesapeake Bay water at a concentration of 512 mg/m3. What is the…

A: Given data,  Concentration = 512 mg/m3  1 oz = 28.35 g  1 gal = 3.78 L  1 m3 = 1000 L

Q: 3. If a researcher starts with 3.00 mL of a 4.50 mg/mL protein solution and adds 10.0 mL of water,…

A:

Q: Calculate the volume in milliliters of a 8.4M silver perchlorate solution that contains 25.0 g of…

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: You have 6L 5M sodium chloride stock solution and you want to prepare 2L 250mM NaCl solution. How…

A:

Q: A 7.91 mass % aqueous solution of ethylene glycol (HOCH2CH2OH) has a density of 1.36 g/mL. Calculate…

A: Density is defined as mass per unit volume. Mathematically, it is expressed by equation (1).Molarity…

Q: 134.1 mg of NaCl (MM=58.44 g) is dissolved in 102.17 L of water. What is the concentration of Na+…

A: The mass of NaCl in the solution is = 134.1 mg The volume of the solution is = 102.17 L The…

Q: A chemist prepares a solution of aluminum chloride (AlCl3) by measuring out 35.2 g of aluminum…

A: Given: Weight of the aluminum chloride is 35.2 g. Volume is 100 mL.

Q: A chemist must dilute 29.5 mL of 11.7 µM aqueous zinc oxalate (ZnC,04) solution until the…

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

Q: If you are going to dilute 125 mL of 1.50 M AgNO3 solution so that the final volume is 215 mL, what…

A: Given;

Q: A chemist prepares a solution of copper(II) fluoride  CuF2  by weighing out  0.07319g  of…

A: Mass of copper(II) flouride = 0.07319 g  Volume of water = 500 ml = 0.5 L  Concentration of…

Q: 6.626x10*“J/s × 299,792,458 m/s 487.9×10 m

A: The given expression has been solved below in a step wise manner and the solution is provided below.