0.5M KOH is needed to determine anthraquinone in plants. what amt of grams of KOH is necessary to prepare 1-liter solution (molecular weight of KOH 56.00 g/mol)

Q: The molecular weight of sulfadiazine is 250 g / mol What volume of DMSO is needed to make a 20 mM…

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Q: 3. What will be the freezing point of an aqueous solution containing 80.0 g of NaCl, 20 ml of water?

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: 8. A 250.0 mL aqueous solution contains 45.1 pg of a pesticide. Express the pesticide's…

A: we need to calculate the concentration of pesticide

Q: 1. What is the percentage of 12g of powder juice in 88g of water?

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Q: Caffeine C8H10N4O2 is stimulant found in tea and coffee. A sample of the substance was dissolved in…

A: The molecular formula of Caffeine is = C8H10N4O2 The mass of solvent is = 45.0 g The molality of the…

Q: What is the concentration in % (M/V) of a solution containing 10.5g of glucose (C6H12O6) in 0.45L of…

A: % (m/v) is defined as  % (m/v) = mass of solute X 100% / volume of solution in L  Since solute is…

Q: Question attached

A: Molarity                Number of moles / litre Given: Number of moles = 0.200 mole Volume of the…

Q: The maximum allowable concentration of lead in drinking water is 9.0 ppb. How many grams of lead are…

A: Volume of solution = volume of water                                 = 60 m3 = 60 x 106 mL

Q: To what volume should a 10.0mL stock solution of 5.0M Ca(OH)2 be diluted to make a solution with a…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: A normal KCl solution contains 175mEq/L each K+ and Cl-. How many moles of each K+ and Cl- arein…

A: Recall the dissociation of KCl           KCl→K+ + Cl- Given KCl solution contain 175 mEq/L each K+…

Q: 1. What is the molality of a solution of 5.00 g of tridecanoic acid dissolved in 20.0 g of stearic…

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Q: 12.0g of sodium hydroxide is dissolved in 2.5L of solution. What is the molar concentration of…

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Q: The concentration of cholesterol (C27H480) in blood is approximately 5.0mM. How many grams of…

A: Given that, the concentration of cholesterol (C27H46O) in the blood is 5.0 mM. So, concentration is…

Q: 5.13 How many grams of potassium chloride (MW=74.6 g/mol) are present in 37.2mL of a 0.250M KCL…

A: Given,Volume of potassium chloride = 37.2mL = 0.0372L.Molarity of potassium chloride solution =…

Q: 1. How many grams of NiCl2-6H,O will be used to prepare a 0.0350 M, 500.0 mL of NiCl2 solution?

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: At 50 °C, the solubility of NaNo3 is 110 g/100 of water. How many grams of NaNO3 are needed to make…

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Q: 6H12O6 How many grams of dextrose, C , are in 322 milliliters of an  intravenous D10W solution…

A: Given, the solution is 10% W/V. This means it has 10 g of dextrose C in 100 mL of the solution. The…

Q: In what solvent will salt (NaCl) freely dissolve? Is it in water or in oil? explain why.

A: NaCl is ionic salts and act as polar molecule.  Large differences in the electronegativities of…

Q: How much KCIo, is needed to make a saturated solution at 90°C?

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Q: A solution contains 0.150 moles of NH3,1.10 moles of H2O, and 2.30 moles of NaOH. What is the mole…

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Q: A 1000-mL solution with ethanol as solvent has 45.0% m/v KOH. How many grams of KOH are there in the…

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Q: Amount of HCl in grams in preparing 25% 2 liters of solution

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Q: 1. A solution containing 12.0 mmol CaCl,.2H,O is diluted to 1 L. Calculate the number of grams of…

A: The given solution contains 12.0 mmol of CaCl2.2H2O in one liter. The mass of CaCl2 in one…

Q: A 3.6 L solution is prepared with 1.28g of caffeine (194.19g/mol). Determine its molarity.

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Q: How many liters of a 0.75 M solution can be made with 75 grams of lead (II) oxide PbO?

A: Given  Molarity of solution = 0.75 M or 0.75 mole/Liter Mass of PbO      = 75 gram Volume in Liter…

Q: calciun carbonate insoluble in water. At 25 degrees C only 5.8mg will dissolve in 1L, what is volume…

A: Given:  Solubility = 5.8 mg/litre  => Solubility = 5.8 x 10-3gm/litre

Q: According to EPA, soft water contains a maximum of 75.0 ppm CaCO3. What is the equivalent maximum…

A: pCa of calcium can be calculated from the concentration of CaCO3.

Q: What is the molarity of a solution in which 211g sodium hydrogen carbonate is dissolved in a 10L…

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Q: 8. How many grams of CaCl, will be dissolved in 50g of water at 70°C2 9. What amount of water is…

A: We need to check solubility value at particular temperature from graph.

Q: Calculate the molarity of a 5-L solution that is formed by adding a 2.6 g of HCl in a certain amount…

A: The molarity is given as the no of moles of solute present in the total volume of solution in the…

Q: Calculate the mole fraction of KI in a solution made by dissolving 3.4 g of KI in 5.8 g of water.

A: Please find the attachment

Q: Consider a 0.500 m acqueous solution of iron(iii)chloride at 1atm  (a) What does "m" stand for ?…

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Q: Fifty milliliters (mL) of a 0.10N solution of sodium thiosulfate, Na2S2O3, is to be make a 0.020N…

A: The concentrated solution has a high mole of the solute dissolved and the dilute solution has a low…

Q: How much mgcl2 must you dissolve in water to prepare 20ml of a 2M solution.

A: Consider the given information is as follows; Volume of solution = 20 mL = 0.02 L Molarity of…

Q: What is the volume (in liters) of a .20M solution that contains .30 moles of Na2SO4 dissolved in it?

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Q: 1.) What is the concentration (in m) of CaBr2 in a solution prepared by dissolving 5.73 g of CaBrz…

A: weight of solute (CaBr2) = 5.73 g molar mass of  CaBr2 = 199.89 g/mol weight of solvent (H2O) = 457…

Q: How many grams are needed to make a saturated solution of lead (ll) nitrate in 400 g of water at 40…

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Q: 2. What mass of water is needed to dissolve 34.8 g of copper(IIl) sulfate in order to prepare a…

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Q: How much sugar dissolves completely in ½ cup of water?

A: A question about solubility of sugar in 1/2 cup of water.

Q: What is the molality of phosphoric acid, H,PO, in a solution of 14.5 g of H,PO, in 125 g of 4°…

A: Given : Mass of H3PO4 = 14.5 g And mass of water = 125 g

Q: A 250,0 mL aqueous solution contains 45,1 micro gram of a pesticide. Expres the pesticide's…

A: Given,  Volume of aqueous solution of pesticide = 250.0 mL  Mass of pesticide in μg = 45.1 μg a).…

Q: 1) When 2.25 grams of an unknown non-electrolyte dissolves in 12.0 grams of water the solution…

A: Given, Amount of unknown compound, W1 = 2.25 grams Amount of water, W2 = 12 grams Kf of water is…

Q: What is the freezing point of an aqueous solution that contains 2.30 moles of rock salt (NaCl) per…

A: ΔTf = kf . molality We know kf for water is 1.86 ⁰CKg/mol Freezing point for pure water is 0 ⁰C or…

Q: 1.24g of yellow powder is dissolved 405mL of water. What is the percentage by pass of the solution?

A: The given problem can be solved by using the formula given below as; Mass of solute = 1.24 g…

Q: 5. When 1.150 grams of an unknown non-electrolyte dissolves in 10.0 grams of water, the solution…

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Q: One liter of a 500 ppm solution of KClO3 contains how many grams of

A: Volume of 1 liter.  Solution kclo3 concentration of 500ppm. We have a kclo3 contains how many grams…

Q: How many grams of glucose are present in 750 mLs of a 5.0 % m/v glucose solution?

A: Given, 750 mLs of a 5.0 % m/v glucose solution

Q: How many kilograms of water must be added to 54.1g of sodium iodide to make a 4.52m sodium bromide…

A: The given data contains, Mass of NaI = 54.1 g Molality of NaBr = 4.52 m

Q: 1) How much (in grams) urea [CO(NH,),] must be added in 550 g of water to prepare 1.50 m solution?

A: molality of Solution = Moles of Solute / mass of solvent in kg   From this relation we can calculate…

Q: 11.8. (a) Explain why the concentration of dissolved oxygen in fresh water is an important indicator…

A: Oxygen is a nonpolar molecule, and water is a polar molecule, so there will not be any interaction…