1. How many mg of methylparaben are required to prepare 8 fl. oz. of a solution containing 0.12% w/v of methylparaben?

Q: The osmotic pressure of solution containing 7.0g of insulin per liter is 23 torr @ 25degrees…

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Q: In all 50 states,a person witha blood alchohol concentration of 0.080% (v/v) is considered legally…

A: In this question, we want to determine the volume of total alcohol Concentration in 5.0L blood…

Q: What is the boiling point rise of a 40 wt% solution of glycerol in water boiling at 300°F

A: Elevation in boiling point or boiling point rise (∆Tb) :-  When a non volatile solute is added to a…

Q: 2. When washing dishes, what works better, warm or cold water? Which do you thinkwill help the…

A: Hi, we are supposed to answer one question. To get the remaining questions solved please mention the…

Q: How many moles of solute are dissolved in 0.015848 kg of cyclohexane if the solution has a molality…

A: Given that, Mass of cyclohexane (solvent) = 0.015848 kg Molality of the solution = 0.542 mol/kg

Q: How would you prepare 250 mL of a 4.4% w/v KBr solution in water? Assume that a 250-mL volumetric…

A: w/v % = weight of the solute / volume of the solution * 100 Weight of the solute = x g Volume of the…

Q: Explain the molecular reason why the vapor pressure decreases when glycerol (C3H5(OH)3) is dissolved…

A: The answer is given as follows Vapour pressure : This is a pressure exerted by the gas which is in…

Q: How much compound is required to make 2.5 molar solution in 250 ml solvent? Molecular weight is 60.

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Q: Predict which member of each pair is more soluble in water. Explain your prediction. O. O. CH, (a)…

A: The solubility of a compound follows like dissolve like principle. The like dissolve-like principle…

Q: In many states, a person is legally intoxicated if his or herblood has a concentration of 0.10 g (or…

A: Given, the threshold concentration level for ethyl alcohol in blood is= 0.10 g/dL  We know that,…

Q: How many mL of ethanol are contained in an 8.0-oz bottle of hand sanitizer that has a concentration…

A: The given information is that, 62% (v/v) indicates that 100 ml of hand sanitizer consists of 62 ml…

Q: 4. Compare boiling points and solubilities in water for each pair c Ammonia, NH, and methane, CH, b.…

A: Physical properties of a compound depends on its intermolecular forces. The compounds which have the…

Q: How many milliliters of a 0.1% (w/v) thimerosal topical solution should be used to prepare one-half…

A: Concentration is defined as amount of solute present per unit amount of solvent or solution.…

Q: An individual is legally intoxicated with a blood alcohol level of 0.08% (w/v) of ethanol. How many…

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Q: How many grams of NaOH will you need to add to 5.0 mL of deionized water to obtain a 3.0 M solution?

A: Given that, Molarity of NaOH= 3.0 M volume= 5.0 ml = 0.005 L molar mass of NaOH= 40 g mol-1 mass of…

Q: 1. How many ml of sulphuric acid are required to make 1.5L of a 32% (v/v) solution? 2. How many mls…

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Q: Given a 20% w/v solution of chlorhexidine gluconate, what volume is required to make 400ml of a 2%…

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Q: what weight of NaCl in 800g acetone is needed to bring boiling point to 60°C

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Q: How many grams of NaOH are needed to make 750 mL of a 2.5% (w/v) solution?

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Q: If 25 g of sodium chlorate (NaCIO3) are dissolved in 100 g of water at 70 C , how would you describe…

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Q: How many grams of phenol should be used to prepare 240 g of a 5% (w/w) solution in water?

A: Formula used :-  W/W % = (Mass of phenol ÷ Mass of solution )×100%

Q: How much ethyl alcohol is in 500mL of a can of beer which is 6.7% ABV?

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Q: W.H.2;How much Cl ions are contained in 5 L solution 28 ppm? K

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Q: A certain non-volatile hydrocarbon that weight 1.0g was dissolved in 50g of benzene. The resulting…

A: Boiling point depression (∆Tb) is mathematically defined as the product of boiling point depression…

Q: Molecule A OH Molecule B HO.

A: 3. The given molecule A is propan-2-ol and molecule B is propan-1-ol. Propan-1-ol is a linear…

Q: How much mL of Acetone is needed to make 100mL of an aqueous 30% (v/v) Acetone solution? How much mL…

A: Given,  Volume of the solution = 100 mL  Volume percent of acetone = 30% How much mL of Acetone is…

Q: [Topic: Dilution] A concentrated solution of 15% w/v KOH solution is available. How would we prepare…

A: The molarity of a given solution can be called as the ratio of number of moles of the solute to that…

Q: V/If the concentration of Ca is 56.4 mg/L and of Mg is 8.8 mg/L in water, what is the total hardness…

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Q: How many moles of stearic acid are contained in 0.25 mL of a 5.4 x 10^-4 g/L stearic acid in hexane…

A: There are various modes of expressing concentration such as strength, molarity, molality…

Q: A laboratory technician purchased 250. mL of 15.4 mol/L nitric acid. She uses this concentrated…

A: Given that : Initial volume (V1) = 250 mL = 0.25 L Initial concentration (M1) = 15.4 mol/L Final…

Q: How many grams of KCl will be undissolved when 50g of KCl is dissolved in 100g of water at 20.0oC?

A: First we have to find the solubility of KCl at 20.0 oC by referring the solubility chart of…

Q: What weight of potassium permanganate is required to prepare 250ml of a w/v solution such that 10 mL…

A: Initial volume ×initial concentration = final volume × final concentration

Q: How    do    you    prepare    25    mL    of    0.4%    (w/v)    cesium    chloride?

A: Dear student since you have asked multiple questions but according to guidelines we will solve 1st…

Q: Would you expect ibuprofen (see problem 1f) to be soluble or insoluble in 1.0 M NaOH? Explain.

A: Ibuprofen is a non-steroidal anti-inflammatory drug.  It was derived from propionic acid. It was…

Q: In stock is a 2 L of a solution that is 60% (v/v) alcohol in water. How many cc of pure alcohol does…

A: Volume of solution = 2L

Q: 1. How many mmol of 4-methylpentan-2-ol are in 1.66 mL?

A: The considered compound is 4-methylpentan-2-ol. It exists as a liquid in room temperature. It is an…

Q: What is the boiling point of a solution prepared by dissolving 2.50g of biphenyl (C12H10) in 85.0 g…

A: The given problem can be solved by using the formula given below as; ∆Tb = Kb . m…

Q: 8ds De least soluble in a liquid: low temperature and high pressure Ohigh temperature and high…

A: Interpretation: We have to tell under which condition gas is least soluble in a liquid.

Q: How many mL of 2.50% (w/v) glucose contains 78.6 g of glucose?

A: % w/v = (mass of solute in g/volume of solution in mL) × 100%    Formula for dilution :- C1V1 = C2V2…

Q: Part A How many mmoles of Mg2+ are present in 1 L of a Normosol-R solution that contains 4.3 mEq of…

A: The term "mole" provides the information about the substance's quantity. If the values of…

Q: A student is about to dissolve 1.1 g of compound Z in solvent Y. Is 100 mL of solvent Y already…

A: Solubility of Z = 3.44 g/L So, 1 L Y : 3.44 g Z

Q: how much ml of ethanol is needed to make 200ml of an aqueous 15% (v/v) solution?

A: Given :-  % (v/v) of solution = 15%  Volume of solution = 200 mL  To calculate :-  Volume of ethanol…

Q: e amount of urea in ppm [parts per million] pre ntaining 55 % by mass of solvent is

A: Given: Concentration of solution = 55% by mass of solvent To Calculate: Amount of urea in ppm

Q: Arrange the following solutions in order of increasing boiling point. v 0.075mol K3P04 dissolved in…

A: Given that  1) 0.075 mol of K3PO4 dissolve in 100 gm water 2) 0.10 mol of NaI dissolved in 100 gm…

Q: What is the melting point of a solution that is formed when 620 g of ethylene glycol (C2H6O2) is…

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Q: Show the differance between Soaps and Micelles and Detergents:

A: Soaps are biodegdrable and form white precipitate with hard water that is called as scum whereas…

Q: How many L of a 9.4% (m/v) sample of salt water contain 22.4 g of salt?

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