An effective germicide used in laboratories is a 70.0% v/v ethanol solution. This (v/v) means the ethanol concentration is 70 mL in every 100 mL. What volume of pure liquid ethanol and what volume of water are needed to make 1.25 L of 70%v/v?

Q: Typical seawater contains 2.7g of salt (sodium chloride, NaCl) per 100mL. What is the molarity of…

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Q: 2.12 Fundamental water quality parameters A municipal water supplier reported concentrations of…

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Q: What is the molarity of ethanol in a 90 proof ethanol–water solution? Assume the density of ethanol,…

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Q: What is the %v/v of a solution made from 176.1 g of ethylene glycol (density is 1.11 g/mL) in water…

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Q: How would you use a 250-mL volumetric fl ask to prepare each of the following solutions? a. 2.0%…

A: Given: Volume of solution to be prepared= 250 mL To prepare a. 2.0% (w/v) KCl in waterb. 34% (v/v)…

Q: 2.950×10−2 M solution of glycerol (C3H8O3) in water is at 20.0∘C. The sample was created by…

A: Molarity is moles in 1 litre solution. 0.02950 mol in 1 litre solution. Molar mass of glycerol =92g…

Q: 5) Rubbing alcohol is 70.% isopropyl alcohol by volume. How many milliliters of isopropyl alcohol…

A: Hi, since you have posted multiple questions, we will answer the very first question. Kindly repost…

Q: b) How many grams of strontium nitrate, Sr(NO3)2, are needed to prepare 3.40x10°mL of a 0.925 M…

A: b. Molarity of a solution is defined as the number of moles of solute dissolved in one litre of a…

Q: 1. Calculate the molarity of each of the following solutions: a) 20.0 g of NaBr in 850 mL of…

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

Q: 6. What is the percent by volume of isopropanol in a 90ml solution that contains 25ml isopropanol?…

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

Q: Dimethyl sulfoxide, C2H6SO, is a compound which is used in some countries to carry drugs through the…

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Q: Calculate the molarity of each of the following :

A: The substance quantity considered in moles and mixed into 1 decimeter cube milliliters of liquid…

Q: A solution is prepared using 0.125 g of glucose, , in enough water to make 250. g of total solution.…

A: In the question Following information given - Mass of the solute , glucose = 0.125 g Mass of the…

Q: The maximum contaminant level of fluoride (F−)(F−) in drinking water as set by the the Environmental…

A: Parts per million is abbreviated as ppm and is expressed as mg/L. 1 ppm=mgL

Q: A patient has a “cholesterol count” of 214. Like manyblood-chemistry measurements, this result is…

A: Molar concentration is the representation of explaining the concentration of solute in a solution.…

Q: In order to prepare a 2.506 M aqueous solution of potassium iodide (KI), how many grams of potassium…

A: Given: Molarity of KI solution = 2.506 M Volume of solution = 2.374 L Known: Molar mass of KI = 166…

Q: What is the concentration of a solution made by dissolving 1.2 g of salt in 3.8 g of water?

A: The mass of solute present in a fixed mass of solution is known as concentrationof the…

Q: A certain ionic compound X has a solubility in water of 83.2 at 15. C. Calculate the greatest mass…

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Q: A solution was prepared by dissolving 1280 mg of K3FE(CN), in sufficient water to give 770 ml

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Q: An aqueous solution that contains 425 ppm of potassium nitrate (KNO3) is being used in the lab.…

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Q: What is the %v/v of a solution made from 191.1 g of ethylene glycol (density is 1.11 g/mL) in water…

A: Given data : Mass of ethylene glycol = 191.1 g Density of ethylene glycol = 1.11 g/mL This mass of…

Q: What is the %v/v of a solution made from 66.1 g of ethylene glycol (density is 1.11 g/mL) in water…

A: Given data,Mass of ethylene glycol=66.1gDensity of ethylene glycol=1.11g/mLTotal volume=500mL

Q: Consider naphthalene, C10H8, the active ingredient of moth balls. A solution of naphthalene is…

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Q: The mass of carbon dioxide present in 250 mL of the solution is

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Q: Complete the following steps: A) Show the necessary calculations. B) Write out directions for…

A: We have given that To prepare solution we have to know following formula Concentration = No.of mole…

Q: Calculate the percent by mass of KBr in a saturated solution of KBr in water at 10 °C. as shown for…

A: The solubility of KBr in the solution at 283 K is equal to 60g/100g of water. This implies that a…

Q: You have a stock solution of NaCl in water that has a concentration of 50.0g/L. State what volume of…

A: Given: Concentration of stock solution of NaCl = 50.0 g/L.

Q: 6 mL of a 1.5 % CuSO4 solution is diluted to 10 mL with pure water, what is the final concentration…

A: NOTE : 1) since density is not given, we have to assume % concentration as % (m/v). 2) Since it is…

Q: Ascorbic acid, vitamin C, is a water-soluble vitamin. A solution containing 80.5 g of ascorbic acid,…

A: Given: Mass of ascorbic acid = 80.5 g Mass of water = 210.0 g Density of water= 1.22 g/mL

Q: 100 90 80 NANO 70 60 CaCl 50 Pb(NO)2 o 40 KCI NaCI 30 20 KCIO, 10 Ce,(SO.) 10 20 30 40 50 60 70 80…

A: Solubility is directly related to temperature, when temperature increases then solubility of the…

Q: 100 90 80 NaNO 70 Pb(NO)2 KCI 60 CaC 50 40 NaCl 30 20 KCIO, 10 Ce,(SO 10 20 30 40 50 60 70 80 90 100…

A: The question is based on the concept of solubility.   The maximum amount of solute which can be…

Q: B. A solution is made by adding 16.00 grams of sodium acetate, NaC2H3O2, to enough water to mak mL…

A: Solute dissolved in solvent forms the solution. pH is the negative logarithm of hydrogen ions. pH…

Q: Blue #1 is an FDA approved dye with the formula C37H34N2NA2O9S3. A stock solution is prepared by…

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Q: 100 90 NANO 80 70 Pb(NO)2 KCI 60 CaC 50 40 NaCl 30 20 KCIO, 10 Ce,(SO 10 20 30 40 50 60 70 80 90 100…

A: Given the graph of solubility of various salts in water on Y-axis and temperature on X-axis. Which…

Q: 2. a) 25mL of water is added to 125mL of 1 0.15mol/L NAOH solution, what is the concentration of the…

A: Given  (a)  Initial Concentration of NaOH solution ( M1 ) = 10.15 mol/ Liter              initial…

Q: What is the %v/v of a solution made from 186.1 g of ethylene glycol (density is 1.11 g/mL) in water…

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Q: 1. How many grams of water must be added to 10.0 g of Ca(NO3)2 in order to prepare a 12.0%(m/m)…

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Q: A 1.0 M (molar) solution contains 1.0 mole of solute per 1.0 L of solution. Which describes a 1.0 mM…

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Q: 6.02 x 10^20 molecules of urea are present in 100 mL of its solution. The concentration of solution…

A: First we will find moles of urea present using mole concept. Then find concentration of urea.

Q: What is the %v/v of a solution made from 141.1 g of ethylene glycol (density is 1.11 g/mL) in water…

A: % V/V = ? Mass of ethylene glycol = 141.1 g Density of ethylene glycol = 1.11 g/ml Total final…

Q: 100 90 NANO 80 70 Cac Pb(NO), 60 50 40 KCI NaCI 30 20 KCIO, 10 Ce,(SO,), 10 20 30 40 50 60 70 80 90…

A: Above question can be easily solved by looking this graph at 10 degree celcius.

Q: part 1How many ml of a 14M solution must be used to make 250ml of 1.75M? part 2 Water is added to…

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Q: A solution prepared by mixing 35 g of NaCl and 100. g of water has a mass percent concentration of…

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Q: You have 500 mL of a concentrated stock solution. You use 10 mL of this solution  to prepare 100 mL…

A: The idea with diluting a solution is that the number of moles of solute will remain constant after…

Q: es According to the EPA, when the concentration of lead in tap water reaches 15 ppb, certain…

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Q: Two solutions are prepared. The first contains glucose (C6H12O6) dissolved in water at 0.180m…

A: The number of moles of MgCl2 is calculated as shown below. The number of moles of MgCl2 is 0.136…

Q: How many mL of 11.9 M HCl would be required to make a 250mL of 2.00 M HCl

A: Molarity (M) can be used for the determination of volume of the solvent or the amount of solute…

Q: When 17.4 ml of a solute is dissolved into 25.0 ml of water, the volume of a solution becomes 28.2…

A: The given volume of the solute = 17.4 ml The volume of water added =  25.0 ml The volume of the…

Q: 100 90 NANO 80 70 60 CaCl 50 Pb(NO)2 40 NaCl KCI 30 20 KCIO, 10 Ce,(SO) 0 10 20 30 40 50 60 70 80 90…

A: