What is the molar concentration of a 4% solution of borax? (sodium tetraborate decahydrate, Na2B4O7·10H2O) What volume of a 3.0 M H2SO4 solution is required to just neutralize 10.0 mL of a 4% solution of borax? Calculate the number of [CH2CHOH] monomer units in the mean strand of PVA (78,000 g/mol).

Q: Which will have greater molar conductivity and why? Sol A. 1mol KCldissolved in 200cc of the…

A: Molar conductivity (ƛm) is the conductivity of 1 mole of an electrolyte. It’s symbol is ƛm. The…

Q: 3. (a) Calculate the molar conductivity at infinite dilution of barium chloride (in water). (b)…

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Q: How many grams of Pb(NO,)2 (331.2 g/mol )are needed to prepare 300 ppm (w/v) of Ph (207.2 gmol) in…

A: Given information, Molar mass of Pb(NO3)2 = 331.2 g/mol Volume of solution = 1 L = 1000 mL ppm…

Q: When a 0.01 M KCl solution was filled into a conductivity cell at 25°C and its resistance was…

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Q: Explain about degradation of azo dyes in wastewater using micro-nano bubble treatment.

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Q: 2) What is the role of EDTA in determining the hardness of a water sample along with the chemical…

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Q: Calculate the ppm Na+ (23.00 g/mol) in the solution

A: Given 0.3000 g of Na3PO4 (163.94 g/mol) is dissolved in water and diluted to 100.0 mL  We have to…

Q: The molar concentration of 290 ppm of Cs+ (132.91 g/mol) in a solution that has a specific gravity…

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Q: Log Koc = 2.36 for the pesticide Carbaryl.  Rainwater percolating down through the soil contains 5…

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Q: What percentage of a 1.5g sample of SrF2 could dissolve in 10.9 liters of water?

A: Percentage dissolved amount of a sparingly soluble salt can be calculated by knowing its molar…

Q: what is the pH of bleach with [H3O+]=4.2*10-12 M

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Q: A student investigated the stoichiometry of the nickel (II) nitrate - sodium sulfide - water system…

A: The reactants given are Ni(NO3)2 and Na2S.

Q: A sample is known to consists of NaOH, or NaHCO3 or Na2CO3 or possible compatible mixture of these,…

A: Given, 1.100 g sample 31.4 ml of HCl

Q: The molar concentration of 290 ppm of Cs+ (132.91 g/mol) in a solution that has a specific gravity…

A: Given: Concentration of Cs+ in ppm = 290 ppm And specific gravity of solution is 1.08. Since density…

Q: Write the chemical equation that describes the dissolution of gypsum in water and describe how many…

A: Gypsum dissociates in water to form its ions.

Q: What would Ksp be equal to in terms of "x" for the insoluble ionic compound Mn203? O 27x4 O256x6 O…

A: Using the expression of equilibrium constant we can find Ksp.

Q: What is the precipitate formed from the reaction of permanent hard water with sodium carbonate?…

A: Permanent hardness of water is due to very soluble magnesium sulfate and slightly soluble calcium…

Q: The molar concentration of 290 ppm of Cs+ (132.91 g/mol) in a solution that has a specific gravity…

A: given molar concentration = 290 ppm =290 mg/L = 290*10-3 g/L

Q: 01: Find the weight of N22C204 (FW = 134.00 g/mol) required to prepare 250 mL of 0.1000 M Na2C204…

A: Given values are, Formula Weight = molar mass= 134.00 g/mol Volume of solution =250mL =0.250L And ,…

Q: You are required to prepare 2 L of a solution containing 2.000 x 103 mol/L of Cu2*(aq). Which of the…

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

Q: What volume of 0.00945 M solution of potassium hydroxide would be required to titrate 50.00 mL of a…

A: Molarity is defined as the amount of solute dissolved per litre of solution. When the titration is…

Q: Write an equation to show the reaction between plaster of Paris and water.

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Q: PbI4 does not exist. Why?

A: Given: PbI4 does not exist.

Q: Question attached

A: The difference between chemical oxygen demand and biological oxygen demand has to be given,

Q: Fatty acid-soap systems exhibit a minimum in surface tension as a function of pH. What causes the…

A: Unionized fatty acid that is present in this region is less surface active Increase in the level of…

Q: The electrical resistance of a column of 0.05 mol L-1 NaOH solution of diameter 1 cm and length 50…

A: Given information, The electrical resistance of a column of 0.05 M NaOH solution of diameter 1 cm…

Q: A solution was prepared by dissolving 6.34 g KCl.MgCl2.6H2O in sufficient water to give 2.00 L.…

A: Weight/volume percentage w/v%is one of the concentration term and it is defined as the mass of…

Q: Describe the preparation of a. 600 ml of 5.75% (w/v) aqueous glycerol (C 2 H 5 OH, 46.1 g/mol) b.…

A: The given data contains, Concentration (w/v)% = 5.75% Volume of solution = 600 ml.

Q: If 0.50 mol of KCl are dissovled in a certain volume of distilled water and a second solution is…

A: The conductance of the solution depends upon the number of ions and greater the number of ions will…

Q: Draw the structure of Na2S4O6 and what is O.N of sulphur in this compound?

A: The structure of Na2S4O6 can be drawn as follows:

Q: If 0.15g of Calcium hydroxide is needed in preparing 50mL of Calcium hydroxide topical solution,…

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Q: What is the solubility of PbF2 in water? (Ksp of PbF2 is 3.6 × 10-8) |1.34 х 1004 M 1 2 4 C 7 8 3.

A: Given: Ksp of PbF2 is 3.6*10-8

Q: Which has the highest conductivity and why? 0.1 M BaCl2 or 0.1 M NaCl.

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Q: What is the weight (gram) required to prepare 1.2 M solution of 0.75 L from the solid compound of…

A: A question based on molarity concept, which is to be accomplished.

Q: Concentrated sulfuric acid is 18 M.   What volume of H2SO4 is diluted with distilled water to…

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Q: Why is a conductivity measurement of the aqueous solution of a compound a meaningful test?

A: Conductivity is also termed as specific conductance. It measures the tendency of the solution to…

Q: Write the reactions of the hydrolysis of sodium tripolyphosphate (Na5P3O10) in aqueous solution.

A: Sodium triphosphate undergoes hydrolysis to form sodium tetraphosphate and sodium hydroxide. This…

Q: 2. The addition of dimethylglyoxime, H;C4H6O2N2, to a solution containing nickel(ll) ion gives rise…

A: Solution -

Q: Write the formula for a micelle of a Cr (OH) 3 sol obtained as a result of the hydrolysis reaction…

A: Introduction: A micelle is the colloidal suspension form by the aggregation of surfactant molecules…

Q: 1. What is the concentration of Ca2* in ppm if [Ca2*] is 3.85 x 10$ M? 2. Why is it important to…

A: Concept:  1. Molarity to ppm convertion:   If you take molarity (with units mol/L), and multiply it…

Q: What solid would form when phosphoric acid (H3PO4) is added to milk of magnesia (Mg(OH)2)?

A: When an acid reacts with a base it produces salt and water. Such reactions are known as acid-base…

Q: Describe the preparation of a. 600 ml of 5 75% (w/v) aqueous glycerol (C.H.OH, 46.1 g/mol) b. 600gof…

A: Percent (w/v) is a form of expressing the concentration of a solution, that is weight/ volume…

Q: 1. Describe the preparation of (a) 500 mL of 0.0750 M AgNO3from the solid reagent .(b) 1.00 L of…

A: (a) Solution - According to the question - Given - 500 mL of 0.0750 M AgNO3from the solid reagent We…