For Exercises 11–15, calculate the quantities needed to prepare the solid and semisolid compounds. Round your answers to two decimal places (hundredths) when necessar Calculate the amount of zinc oxide powder needed to prepare 20 g of 15% zinc oxide ointment.

Q: What aliquot of 20.0 mg L-1 nitrite stock solution required to prepare 80.00 mL of 15.0 mg L-1…

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute…

Q: How many equivalents are present in 4.00 x 10²⁴ molecules of phosphoric acid?

A: We know that 1 mole of H3PO4 contains 6.023 x 1023 molecules. So, no of moles which contain…

Q: If 0.236 kg of MgCl2 was dissolved in 1200 g of water, and the final volume of solution is 1.190 L,…

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Q: How much copper sulfate and water must be weighed in order to make 23.14 L of 13.5 M copper sulfate?

A: Given: Molarity of the solution = 13.5 M The volume of the solution = 23.14 L  Standard data: The…

Q: Assume you have 8.0 M nitric acid available. What amount in milliliters of the 8.0 M nitric acid…

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Q: What is the molarity of a solution in which 10.8 grams of magnesium chloride is dissolved in enough…

A: Molarity is the concentration of solution which expressed the number of moles of solute present per…

Q: A medical technician needs to prepare a saline IV drip bag for a patient. Calculate and explain how…

A: Volume of NaCl solution = 500.0 mLMolarity of NaCl = 0.154 MMolar mass of NaCl = 58.44 g/mol

Q: Calculate the molarity of a 12 L solution containing 318 g of sodium carbonate.

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Q: Ms. Dunne added 2233.8 milliliters of water to 16.2 milliliters of NaOH solution to make a 3.60 x…

A: The equation for calculating molarity is the ratio of the moles of solute whose molarity is to be…

Q: How many grams of MgF2 are needed to prepare 743.6 mL of  0.859  molar aqueous MgF2?

A: Molarity of a solution is defined as the number of moles of solute upon the volume of the solution…

Q: How many moles of NaOH are present in 12.5 mL of 0.210 M NaOH?

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Q: An aqueous NaBr solution has a mass of 140.0 g and contains 28.00 g NaBr. Calculate the mass percent…

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Q: How many liters of 30. mM potassium dihydrogen phosphate stock solution would be required to make…

A: Given that -  Molarity of stock Solution of potassium dihydrogen phosphate = 30 mM  Molarity of new…

Q: A soultion is 5.00% by mass potassium sulfate. How many grams of this solution would be needed to…

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Q: From the information below determine the mass of nh3 in 500 grams ammonia.   % solute by mass 28…

A: Solution Mass per cent is also a way of expressing a degree or describing the component throughout a…

Q: How many grams of NaOH are needed to prepare 250 mL of  0.225 MM  NaOH?

A: The molarity of the solution is defined by the mole of solute present in one liter of solution. The…

Q: How many moles of NaOH are present in 31.5 mL of 0.240 M NaOH?

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Q: 1)A solution of Na2CO3 is prepared by dissolving 0.511 g of the solid in approximately 30 mL of…

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

Q: Assume that you want to create a 50.0g aqueous solution that is 5.659% by mass sodium chloride. How…

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Q: How many grams of Ca(NO3)2 is needed to prepare 475 mL of 2.25 M solution? Atomic mass: Ca = 40.08 N…

A: Given that , Volume of Ca(NO3)2 = 475 mL = 0.475 L concentration =2.25 M Atomic mass of Ca=40.08…

Q: What is it called when the final temperature of your Solid (Tin) and the water are equal?

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Q: How many grams of potassium hydroxide would you use to prepare 2500 mL of a 1.40 M solution?

A: Introduction: Molarity (M): It is the amount the moles of a solute per liters of a solution.…

Q: How many moles of NaOH are present in 14.5 mL of 0.130 M NaOH?

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Q: How many moles of NaOH are present in 27.0 mL of 0.110 M NaOH?

A: Molarity is one of the concentration term which is used to define the concentration of a solute in a…

Q: Ammonium phosphate ((NH4)₂PO4) is an important ingredient in many fertilizers. It can be made by…

A: Answer:- This question is answered by using the simple concept of stoichiometry which involves the…

Q: How many grams of strontium nitrate are needed to prepare 3.4 L of a .925 M solution?

A: Given :- volume of solution = 3.4 L  Molarity = 0.925 M or 0.925 mol/L  To calculate :- mass of…

Q: How much water would you need to ADD to 500. mL of a 2.4 M KNO3 solution to make a 0.36 M solution

A: Molarity is defined as total number of solute present in 1000 ml of solution . For dilution we will…

Q: How much silver nitrate (in grams) must be used in preparing 600 mL of a solution such that 20 mL…

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Q: What are the total number of moles of H2SO4 needed to prepare 1.9 litres of a 4.6 M solution of…

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Q: molarity

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Q: What is the volume in mL needed to prepare a 0.4 M NaOH solution using 1.6 g of NaOH? The molar mass…

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Q: What mass of 7.25% NaOH solution is needed to provide 43.0 g of NaOH? (Give answer with correct sig…

A: Given  Weight % of solution = 7.25 %  Mass of NaOH  = 43 gram  Mass of solution = ?

Q: Calculate the grams of solute needed to prepare 4.00 L of a 1.50 M NaOH solution with appropriate…

A: Volume of solution required = 4.00 L = 4000 mL Concentration of the solution required = 1.50 M Molar…

Q: 38. A public water supply was found to contain 1 part per billion (ppb) by mass chloroform, CHCI 3.…

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Q: What is the mass in grams of Potassium Chloride present in 23.0 g potassium chloride of 12.50…

A: Here we assume that the mass percent of KCl = 23% or 0.23g we use

Q: How many moles of NaOH are present in 15.0 mL of 0.120 M NaOH?

A: We have 15 ml solution, 0.120 M as concentration ,we have to calculate the moles of NaOH present.

Q: What is the molarity of a solution prepared by adding 5.59 grams of potassium nitrate to 291 mL of…

A: Molarity of solution is defined as number of moles of solute dissolved per litre of solution.

Q: Assume household vinegar contains 5% acetic acid by weight and that the density of vinegar is the…

A: Given :  Volume of household vinegar = 404 ml  Density of vinegar = 1 gm/ml  Weight % of acetic acid…

Q: Noel needs a solution of sodium sulfate for an experiment. How many grams of sodium sulfate must…

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Q: How many mL of a solution of sodium sulfate 4M must you extract to prepare 57mL of a 1M solution in…

A: The molarity of sodium sulfate solution = M1 = 4 M The molarity of the sodium ions solution = M2 = 1…

Q: Calcium hydroxide topical solution is done by slaking Calcium Oxide. How much Cao (56 g/n) is needed…

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Q: How many moles of solute are present in 300. mL of a 0.60 M solution of NaOH? Please report your…

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Q: How many liters of 20. mM potassium dihydrogen phosphate stock solution would be required to make…

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Q: What mass of salt (NaCI) in grams (g) is required to prepare 2.552 L ofD51/¼NS solution? Give your…

A: Given that : The volume of D514NS solution = 2.552 L We have to calculate the mass of NaCl required…

Q: Household laundry bleach is a dilute solution of potassium nitrate (KNO3) mixed with water. How many…

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Q: What volume of glacial acetic acid (17.6 N or 17.6 M) would be required to prepare 100 ml of a 0.2 M…

A: Answer: To dilute a stock solution water gradually added in it and addition of water only changes…