Which was the yield?

Q: A 6.00 % (m/v) NaCl solution contains 49.2 g of NaCl. What is the total volume (V) of the solution…

A: The mass of solute (in gram) present in 100mL of the solution is known as the m/v percent…

Q: Insulin is a protein that is used by the body to regulate both carbohydrates and fat metabolism. A…

A: Given: Concentration of insulin = 30.0 mg/mL. And volume of insulin solution = 275 mL.

Q: A50 ml. sample of a 48 0 % (m/v) acetic acid (HC,H3O2) solution is added to water to give a final…

A:

Q: 2- A solution of sugar contains 35 grams of sucrose, C12H22011 in 100 mL of solution. What is the…

A: Given  Mass of sucrose     = 35 gram  Volume of solution = 100 mL   1000 mL  = 1 Liter  100 mL    =…

Q: 1. What is the normality of a solution that contains 2.5 grams of Na:S2O3.5H2O in 500 ml water?

A: Normality is defined as the gram equivalent weight of solute dissolved in one liter of solution.…

Q: In order to form a monolayer of stearic acid (in a petri dish that measures 14.50 cm in diameter),…

A: Density of a substance is useful in the identification of pure substances and characterization with…

Q: A 14.0 mL sample of vinegar, which is an aqueous solution of acetic acid, CH3COOH, requires 24.5 mL…

A: From the balanced chemical equation:mols CH3COOH(vinegar) = mols NaOH(titrant) mols NaOH = MNaOH x…

Q: What is the mass % of acetonitrile in a 2.77 M solution of acetonitrile (MM = 41.05 g/mol) in water?…

A: Mass percentage or percentage by weight is one of the concentration terms that indicates the mass of…

Q: How many grams of 50% nitric acid and water should be taken to prepare a 15% nitric acid solution of…

A: Note : Instead of 15% nitric acid solution , there should be 15g nitric acid solution. Given: Mass%…

Q: Many remote villages depend solely on wells to supply their drinking water. A ground water analyst…

A: we have to calculate volume of sample of well water

Q: A pharmacist works with a 1.75 M solution of sodium bromide (NaBr) and water. The volume of the…

A: Molarity of NaBr solution (M1)  = 1.75 M Volume of solution (V1) = 84 mL Molarity of diluted NaBr…

Q: In the standardization of an acid and base solution, sodium hydroxide (99.5% by mass) was used. A…

A: Given: initial burette reading=5.5mL final burette reading=28mL Weight of the sample=0.12g To find:…

Q: A mixologist diluted 15.00 mL of ethanol solution with a concentration of 40.0% (alcohol by volume)…

A: Concentration of a liquid solute in liquid solvent  can be expressed in terms of molarity,…

Q: A 100 mg vitamin C tablet weighed 1.681 g. A student crushed the tablet and transferred 0.150 g of…

A: Given the weight of 100 mg Vitamic C (ascorbic acid) tablet = 1.681 g  0.150 g of the above tablet…

Q: A solution of 20.91 % by weight H2SO4 has a specific gravity of 1.150. What is the normality of this…

A: Answer-1 Specific gravity is the ratio of density of a substance with the density of water. Since,…

Q: A sample of pure acetyl salicylic acid had a mass of 0.268 grams. It was dissolved in NaOH and…

A: Concentration of aspirin is expressed in term of molarity. Molarity is the number of moles of solute…

Q: 2.) Five standardized dilutions of aqueous lead(11) chromate solution were prepared by adding a…

A:

Q: 25 mL of a 100 mM zinc hydroxide were added to a beaker containing 4 mL of 1M hydrochloric acid…

A: Calculate the number of moles of zinc hydroxide. Number of moles = Concentration (M) × Volume…

Q: Five different solutions were prepared in the laboratory. One was prepared by dissolving 7.1 g…

A:

Q: A) An aqueous solution of sodium nitrate, NaO3, is made by dissolving 21.6 grams of sodium nitrate…

A: Given data,Mass of sodium nitrate=21.6gVolume of solution of sodium nitrate=500mLMass of ammonium…

Q: What volume of a 1.63 mass % solution of Mg(NO 3)2 is needed to contain 0.316 grams of…

A:

Q: Find the milliliters of 0.250M KOH needed to neutralize 115.0 mL of 0.834 M H,PO,. Write and balance…

A: The balanced chemical equation for the neutralization reaction between KOH and H3PO4 is  3 KOH +…

Q: You need to prepare 343 mL of a 5.00 x 10 M CuSO4 solution from a 7 M stock solution. How much…

A:

Q: 1.44 grams of a sample of marble (impure calcium carbonate) dissolved in 40 ml of 1.0 normality (N)…

A: %Purity = Pure mass x 100/Impure mass Number of moles = Molarity x Volume (L)

Q: grams of aspirin tablets are dissolved in water and titrated with the NaOH from an initial volume of…

A:

Q: If you made a solution of 1.5 ppm of Pb in 1.25 mL of nitric acid, from 0.25 mL of a stock solution.…

A: Given information: Concentration of solution (M1) = 1.5 ppm Volume of solution (V1) = 1.25 mL Volume…

Q: Following the procedure, a student recorded the initial volume of sodium hydroxide in his buret as…

A:

Q: An aqueous solution is 6.00 % methanol CH3OH by mass with a density = 0.988 g/mL. What is the…

A: The molarity is the concentration term defined as the number of moles of solute present per liter of…

Q: What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179…

A: 1)  pH of HCl solution to be prepared =1.9

Q: The total concentration of dissolve particles in blood is 0.30 M. An intravenous (IV) solution must…

A: Given: Molarity of blood is 0.30 mol/L Molarity of IV glucose is 0.30 mol/L Volume of IV glucose…

Q: 2.135 g of potassium chloride in enough water to make 100.00 mL solution. Th student then pipettes…

A: Molarity = number of moles of solute / volume of solution (in L)  M1V1=M2V2 M1= initial Molar…

Q: The registered pharmacy technician receives a prescription for 100 of 17% w/ v salicylic acid…

A: Given: prescription required = 17 % w/v salicylic acid ointment. Amount of ointment required = 100…

Q: An aqueous solution of silver nitrate is 6.80 % of silver nitrate by weight. How many grams of…

A: Mass percent of any solute is given by : % by weight = (mass of solute / mass of solution) ×100 %…

Q: In the laboratory you dessolve 22.3g of iron (III) fluoride in a volumetric flask and add water to a…

A: The number of moles of solute to the volume of solution in liters is known as molarity.

Q: In the laboratory you are asked to make a 0.116 m zinc acetate solution using 315 grams of water.…

A: Molality(m) is defined as the Number of moles of solute present per 1000g of the solvent. m=moles of…

Q: Calculate the density of 50.0 g of an isopropyl alcohol–water mixture (commercial rubbing alcohol)…

A: Density is the measurement of mass per unit volume. To calculate the density, the amount of mass of…

Q: An analytical chemist weighs out 0.066 g of an unknown monoprotic acid into a 250 mL volumetric…

A:

Q: In the laboratory you dilute 5.08 mL of a concentrated 6.00 M hydrochloric acid solution to a total…

A: The volume of the concentrated solution, V1=5.08 mL The Concentration of the concentrated solution,…

Q: Which of the following glassware is best used for slow dispensing of 47.00 mL of a solution?

A: Volumetric pipette are the most accurate apparatus for dispensing a liquid. Because here the error…

Q: A student is diluting an aqueous NH4SCN solution for an experiment. The student starts with a 0.100…

A: The final answer is reported in the same number of significant figures as does the error.

Q: You

A: You can used the formula direactly,  ( M2 • V2 ) resulting Solution = ( M1 • V1 )stock solution…

Q: Phenobarbital was introduced in 1912 for the treatment of epilepsy. It is an anti-convulsant and…

A:

Q: A sample of pure acetyl salicylic acid had a mass of 0.268 grams. It was dissolved in NaOH and…

A: Given Mass of aspirin = 0.268 g Molar mass of aspirin = 180.2 g/mol Volume of solution = 500.00 ml =…

Q: A solution of 20.91 % by weight H2SO4 has a specific gravity of 1.150. What is the normality of this…

A: We have to find normality of solution

Q: Price the Prescription using the Professional Fee method. Rx Potassium chloride 40 mEq NaCl 30 mEq…

A: The professional fee is ₱35.00. The mass of KCl and NaCl in each mEq is 0.075 g and 0.058 g,…

Q: A 0.2121-g sample of pure NaC,O, (134.00 g/mol) was titrated with 43.31 mL of KMNO4. What is the…

A: Normality can be obtained by multiplying the molarity of the KMnO4 solution with the number of…

Q: A student is diluting an aqueous NH4SCN solution for an experiment. The student starts with a 0.100…

A: The strength of an unknown solution can be calculated by the following formula: V1S1 = V2S2 Where,…

Q: 1.44 grams of a sample of marble (impure calcium carbonate) dissolved in 40 ml of 1.0 normality (N)…

A: Introduction: Molarity and Normality is often used to express the concentration of the solution.…

Q: A physician requests that an iso-alcoholic elixir containing 30.0% alcohol be prepared. How many mL…

A: Given, Total volume of solution= 1000ml % iso-alcohol elixir for final solution = 30% % low…

Q: According to the label on a bottle of concentrated hydrochloric acid, the contents are 36.0% HCl by…

A: By considering the total mass of the solution be 100 g. The amount (m) of HCl present is 36.0 g. The…