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 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: A doctor orders that a patient receive 0.0036 mole of sodium chloride.  The only solution available…

A: Given a solution: 5.00 g per 500 mL NaCl solution. moles of NaCl required = 0.0036 mol Using the…

Q: If young children have an illness that causes diarrhea and vomiting, they can quickly become…

A: Mass/ Volume % is  basically percentage of solute per 100 ml of solution.  ppm is basically mg / L…

Q: A bottle containing both NaCl(s) and NaCl(aq) is shaken repeatedly over a period of several weeks.…

A: Given : A bottle containing both NaCl(s) and NaCl(aq) is shaken repeatedly over a period of several…

Q: How many grams of solute are present in 855 mL of 0.880 M KBr?

A: We can determine the mass of solute, KBr present in the given solution from the number of moles of…

Q: What mass (measure in g) of copper sulfate is required to prepare 80.0 mL of a 0.300 M solution?…

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Q: What mass of sodium sulphate is required to prepare 500.0 cm3 of 1.30 M sodium sulphate solution?…

A: Molarity is a concentration term for a solution. The molarity of a given solution is defined as the…

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 chemist places 2.6428 g of NaCl in a 100 mL volumetric flask and adds water to the mark and calls…

A: The solution is given below -

Q: Expand the units of molarity for this solution: 0.035 M CaCl2 When the units are expanded, enter the…

A: The objective of the question is to expand the given concentration of the calcium chloride (CaCl2)…

Q: Determine the molarity (M) of the following solutions: 1.50 mol of NaOH in 1000. mL total volume of…

A: moles of NaOH = 1.50 mol Volume of the solution = 1000. mL = 1 L molarity of the solution = ? M

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: 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 grams of NaCl are needed to prepare 15.2 mL of a 0.56 M NaCI (aq) solution?

A: Given :  Volume of solution = 15.2 ml  Molarity = 0.56 M  Molar mass of NaCl = 58.5 gm/mole

Q: A solution contains 40g of common salt in 340g of water.calculate the concentration in terms of mass…

A: Concentration of solution in terms of mass by mass percentage is given as, Concentration of solution…

Q: 1) 12.8 g of NaCl is added to water to make 507.1 g of solution. Calculate the mass percent…

A: Concept: Mass percent concentration = (mass of solute/ mass of solution ) * 100% Molarity = Moles of…

Q: How many moles of NaOH are contained in 12.44 mL of 0.672 M NaOH solution?

A: Given  Volume of solution   = 12.44 mL                                   =  12.44 × 10-3 Liter…

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: Write a procedure explaining how to prepare a solution with a 3.45 % by weight of solid compound…

A: 3.45% by weight means 3.45 g of solute in 100 g solution. so in 100 g mass of solute is 3.45 g and…

Q: 10.00 grams of solid potassium hydroxide is added to 250.0 mL of distilled water. Write a chemical…

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Q: How many grams of solute are present in 645 mL of 0.200 M KBr?

A:

Q: 16.456 g of ethylamine (MM = 45.08 g/mol) are dissolved and diluted with water to 175.00 ml.…

A: Molarity is defined as the number of moles of solute per volume of the solution is liter. i.e.

Q: Write a procedure with diagrams (Lab diagrams showing lab equipments) for the preparation of the…

A:

Q: An aqueous solution of sodium nitrate, NaNO3, is made by dissolving 9.38 grams of sodium nitrate in…

A:

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 many moles of solute are present in 125 mL of a 0.500 M solution of KOH?

A: We have to calculate the moles of KOH .

Q: Suppose you had 48.44 grams of NaCl and you dissolved it in exactly 3 kg of solution. What would be…

A: Given :- Mass of solute NaCl = 48.44 gram Mass of solution = 3 kg

Q: A lab technician prepares a 1.8M aqueous solution of copper (II) sulphate (CuSO4). The density of…

A: Number of moles of  CuSO4 in 1 L of solution = Molarity = 1.8  Mass of solution = Volume x density =…

Q: the concentration in parts per billion (ppb)

A: The environmental protection agency (EPA) has set the legal limit, known as the maximum contaminant…

Q: How many molecules of NaCl are there per mL of 1 M NaCl solution?

A: Number of molecules of NaCl is calculated by determining number of moles of NaCl.

Q: How many grams of solute are present in 195 mL of 0.310 M KBr?

A:

Q: True or False: Water is considered a chemical element

A: Chemical element is a substance in the universe that can not decompose to simpler species ( that are…

Q: Which of compounds A and B is the stronger base? Why? A NH N.

A: Compounds that has a strong tendency to donate a pair of electron is called a base. The class of…

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: How many grams of solute are present in 235 mL of 0.680 M KBr?

A: Given: Molarity of KBr solution = 0.680 M Volume of KBr solution = 235 mL = 0.235 L (because 1 L =…

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: 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: How would you prepare 294 mL of 0.299 M NaCl solution using an available 1.31 M solution? O Dilute…

A:

Q: What mass of lithium phosphate (Li3PO4) is needed to prepare 451.2 mL of a solution having a lithium…

A: Given : Concentration of lithium ion = 0.495 M And volume of solution to be prepared = 451.2 mL =…

Q: Ocean water is 3.5 % NaCI by mass. How much NaCl will be obtained from a 266 mL sample of sea water…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

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

A:

Q: Calculate the molarity of the solution when 1005 mL of solution contains 0.037 g of barium acetate.…

A: Given: Mass of barium acetate=0.037 g Volume of the solution=1005 mL=1005/1000=1.005L…

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

A: Solution Vinegar may be a bitter liquid consisting principally of carboxylic acid and water.…

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

A: