How much stock solution of benzocaine 10% will you need to make 500 mL of benzocaine 5% solution?

Q: How many grams of potassium dichromate (K2Cr2O7) are required to prepare a 250 mL solution…

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Q: How much a drug such as Benzodiazepine would you need to weigh in order to make a 3mM and 25mM of…

A: Given,  Volume (V) = 10 mL     Since, 1 mL = 10-3L        So,.    V = (10×10-3) L                  V…

Q: 4. How would you make 400ml of a 3% glucose solution?

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Q: How much of a 31.0 M hydrochloric acid solution would you dilute to prepare 50.00 mL of 4.00 M HCl?…

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Q: You prepare  45mL of a 0.15M Potassium Chloride solution. What would be the expected mass of 4mL…

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Q: How many milliliters of a 0.5% of a solution contain 4g of a drug?

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Q: A bottle contains 69mL of vanillin extract solution. If the extract contains 45mL of alcohol. What…

A: We have to calculate the volume percent of alcohol in solution.

Q: A solution is made up of 20.0 mL of ethyl alcohol and 50.0 mL of water. What is the volume percent…

A: Volume percent or percentage by volume v/v is one of the concentration terms that indicates the…

Q: You need 950 mL of a 90% alcohol solution. On hand, you have a 5% alcohol mixture. How much of the…

A: 90 % alcohol solution states that 100 mL of solution contains 90 mL of alcohol. The mixture is…

Q: How many mL of a 28% dextrose must you dilute to 223 mL to make a 5% solution? (M,V1 = M2V2)

A: In the question, the solution of dextrose (D-glucose) is given. The initial conc. of dextrose…

Q: No. of grams of 500 ml solution of 2000 ppm NaCl is 1000 2,

A: Given that  Concentration of NaCl solution = 2000ppm Volume of solution = 500mL = (500mL×1L/1000mL)…

Q: How could you prepare 500. mL of a 5 % m/v glucose solution from a 25% m/v stock solution?

A: 25% m/v stock solution of glucose contains 25 g of glucose in 100 mL of the solution and 5% m/v…

Q: c) How much sodium hydroxide, NaOH, powder need to be used to prepare 150 mL of 2.0 M NaOH solution?

A: For NaOH:  Mass (m) = ? Molar Mass (MM) = 40 g mol-1 Volume of solution (V) = 150 mL = 0.150 L…

Q: If you have a 3 M solution of Urea (60.06 g/mol) in 500mL of water. How many milliliters of the…

A: Given,Molarity of urea = 3M.Volume of water = 500mL.Moles of urea = 0.8mol.Volume of solution =?

Q: How many milliliters of a 0.442 M caffeine solution are required to deliver 2.17x10-3 mol of…

A: Concentration is expressed in different ways – Molarity Molality Normality Moles fraction Mass…

Q: OOO0 Solution) solution c mo mo mo ma

A: pH is the negative logarithm of the concentration of H+ ions. The scale of the pH is…

Q: A solution is made using 134.1 ml of phenol (density 1.090) and 500.0 ml of water (density 1.000).…

A: Given : Volume of phenol = 134.1 mL Density of phenol = 1.090 g/mL Volume of water = 500.0 mL And…

Q: A high concentrated solution having a volume of 100 liters is mixed by 85% alcohol and 15% gasoline.…

A: This question is based on Percentage Composition by Volume. Volume of component= volume of…

Q: How many liters of 4M solution can be made using 100 grams of lithium Bromide?   Please go step by…

A: Given Mass of lithium Bromide ( LiBr ) = 100g Molarity of solution = 4 M

Q: Chloraseptic sore throat spray contains 0.35 g of the antiseptic phenol dissolved in 25 mL of…

A: weight/volume percent is given by (w/v)%= mass/volume x 100%

Q: You need 100ml of 0.040M potassium dihydrogen phosphate, KH2PO4. How much of a 0.50M stock solution…

A: Molarity can be defined as a concentration term and it is equivalent to. number of moles of solute…

Q: what is the normality of a solute(carbonic acid) given a 1.13M aqueous solution, with water as the…

A: The carbonic acid has molecular formula H2CO3 and it has two hydrogen atoms. The provided…

Q: Question attached

A: C1V1=C2V2 is molarity equation where C1 is the molarity of the solution having volume V1 AND C2 is…

Q: How many grams of ammonium sulfite is needed to make 250.0 mL 0.500 M solution from solid?  How…

A: We know , Molarity = moles / per L of Solution By using this relation we can calculate the moles of…

Q: e mole fraction

A:

Q: A solution is prepared by mixing 20.0 ml of methanol with enough water to poduce 400.0 ml of…

A: volume percent is defined as volume of solute to the ratio of volume of solution.

Q: Guaifenasin solution contains 9.46g of guaifenasin in each 473ml bottle of liquid. How many…

A: Given: Mass of guaifenasin in 473 mL bottle = 9.46 g. And volume of guaifenasin solution delivered =…

Q: What percent solution would you have if you dissolved 3.7g of NaCl in a total of 250 ml?

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Q: 5. How many ml of isopropyl alcohol are needed to prepare 50 ml of 12% by volume solution?

A: Concentration of a solution can be expressed in terms of molarity, molality, normality, %…

Q: What is the Molar concentration of a 5.10% sodium hypochlorite solution (density 1.0g/mL)’ …Not sure…

A: Given that, a 5.10% sodium hypochlorite solution. The density is d = 1.0g/mL. The molar mass of…

Q: How many grams of sodium chloride will be needed to make the solution isotonic? How many micrograms…

A: Required data,freezing point of 1% epinephrine sulfate=0.13oCFreezing point of 1% NaCl…

Q: You have a stock solution of 3.00 M NaCl and will need to use ______ mL of that stock to make 1.0 L…

A: Dilution is a process via which the concentration of a solution is decreased by adding extra…

Q: How can you prepare 250 ml, 0.1N HNO3 solution from 35% HNO3      and 1.26 g/cm3  density?

A:

Q: A solution is made by mixing equal masses of methanol, CH, O, and ethanol, C, H,O. Determine the…

A: Let both are taken 1 gm  Molecular weight of CH4O = 12+4+16 = 32 gm/mol and C2H6O = 24+6+16 = 46…

Q: 20. Concentrated ammonium hydroxide is 29.0%mass ammonium hydroxide. How much of the concentrated…

A: Given information: mass % of ammonium hydroxide in solution is 29.0%. mass % of ammonium hydroxide…

Q: Diluted solutions Solution 1 Solution 2 Solution 3 Volume stock solution (mL) 4.00 4.00 4.00 Volume…

A: On dilution concentration changes but no of moles remain same. So, M1V1 = M2V2 M1 = Molarity of…

Q: how will you prepare 205.0 ml of 59.00% ethyl aqueous solution

A: The volume percent of a solution is the ratio of the volume of solute that is present in a solution…

Q: A solution is made by mixing equal masses of methanol, CH,0, and ethanol, C,H,0. Determine the mole…

A: Mole fraction is defined as moles of that component divided by the total moles of each component in…

Q: Determine the weight of SDS powder needed in order to prepare 100ml of 25% SDS solution.

A: The weight by volume of a solution is the ratio between the mass of solute to the 100 mL of…

Q: How many mililiters of a 3m urea solution would you need to make to make 500ml of a .8m solution of…

A: since the urea will come only from the 3 M urea solution  Hence moles of urea present in the 0.8 M…

Q: How much of a 29.0 M  hydrochloric acid solution would you dilute to prepare 50.00 mL of 8.50 M HCl?

A: This is an example of dilution HCl so  we can use the formula of dilution i.e…

Q: How many grams of KCI solid do I need to make 500ml of 12% KCI solution?

A:

Q: How many moles and grams are in 15 mL of a 5% Aqueous 1,6 Hexanediamine Solution?

A: 5% aqueous solution of 1,6 Hexanediamine that means 100 mL of solution contain 5 gm of solute 1,6…

Q: How many milliliters of solution are used if 45g of potassium nitrate are used to make a 5M…

A: Molarity  =  Moles of solute/ Volume of solution(L) We are having potassium nitrate as solute.

Q: Prepare 200 mL of a 5% solution of sulfuric acid using a 50% sulfuric acid solution

A: Concentration or Molarity is defined as “the mole of the solute per unit volume of the solution”. It…

Q: Please answer all parts or leave for someone else. Convert the following units of solution…

A: a). 1 ppm = 1000 ppb Therefore 100 ppm = 100 × 1000 = 1.0×105 ppb Answer: 1.0×105 ppb

Q: What mass of quinine sulfate dihydrate is needed to prepare 250-mL of 100.0 mg/mL stock solution of…

A: The stock solution is a solution that is prepared in the bulk for the reaction like titrations. It…

Q: How many tablets of Naproxen 500 mg drug will be needed to make a 120 ml 6% solution?

A: 6% drug solution means 100 ml solution contains 6 gm Naproxen  So, 120 ml 6% solution will contain =…

Q: Jamel is to receive Cleocin 275 mg IV for 6 hr. The concentration of the solution is 5.0 mg/mL. How…

A: The question is based on the concept of solution preparation. by considering the concentration of…

Q: How m any grams of dextrose are in 1200 mL of a 5% D5W solution?

A: 5% D5W solution implies that 5g of dextrose (solute) is present in 100mL of the solution.