A chemist attempts to prepare some very pure crystals of borax by dissolving 100g of Na2B4O7 in 200 grams of boiling water. He then cools the solution slowly until some borax crystallizes out. Calculate the grams of borax recovered in the crystals per 100 grams of initial solution (Na2B4O7 plus water), if the residual solution at 55oC after the crystals are removed contains 12.4% Na2B4O7.What is the percent yield or percent recovery of Na2B4O7

Q: When 0.638g of an unknown organic compound was dissolved in 16.799g of camphor, the resulting…

A: Given  Mass of unknown organic compound = 0.638 gram  Mass of solvent = 16.799 gram…

Q: What mass of silver nitrate will precipitate out of solution if 950.0g of silver nitrate is…

A: Given data,Mass of AgNO3=950gMass of water=225gInitial temperature=50oCFinal temperature=20oC

Q: Describe how to prepare 100.00ml of a 0.250M sodium chloride solution using sodium chloride powder.

A: Volume of solution = 100 mL OR 0.1 L

Q: Arrange the following steps in the standardization of 0.1N AgNO3 * Carefully bring the mixture to a…

A: To arrange the following steps in the standardization of 0.1N AgNO3.

Q: In performing an experiment on freezing point depression, the solution was prepared by dissolving…

A: Given: Mass of salt=2.25 g The volume of solvent=20.00 mL The density of water= 0.997 g mL-1  The…

Q: 1. Solve the % by mass of a solution containing 25.5g of NaCl dissolve in water. Given: solute =…

A: I solved only first question. Remaining repost

Q: The solubility of BaCrO, in water at 25 °C is measured to be 0.0037 Round your answer to 2…

A:

Q: Q3-A 1000 Liter of UST containing carbon tetrachloride, which has a water solubility of 911 mg/L and…

A: Water Solubility Solubility in water is the measure of how much of an oil will dissolve in the water…

Q: You have a 5.0 ml sample of a protein in 0.5M NaCl. You place the protein/salt sample inside…

A:

Q: Why are volumes not additive? Explain.  For example, 10.00mL of pure ethanol and 10.00mL or pure…

A: As total volume depends on the interaction of liquid molecules, volume is not a additive property.…

Q: 1. What is the molarity of a solution in which 150g of Ca© are dissolved in 190ml of solution? (MW:…

A: Formula used:  Molarity: no of Mole/Volume in L  Molality: no of mole of solute/ weight in kg of…

Q: A pharmacist needs 250 mL of 80% v/v alcohol to macerate a dried sample weighing 100 grams. If the…

A: Given : Desired concentration (% (v/v)) of alcohol = 80 % Volume of solution required = 250 mL And…

Q: TOPIC: Recrystallization Students were tasked to conduct a recrystallization experiment to test the…

A: A question based on analytical process that is to be accomplished.

Q: An antiseptic solution is made by mixing phenol with water in the ratio 2: 25. This solution is then…

A: Given: Phenol and water ratio (initial solution) = 2:25 Then, Initial solution and water ratio…

Q: Ben prepared a salicylic acid in pentanol solution by adding 6.11 g of salicylic acid to 67.77 mL of…

A:

Q: Although other solvents are available, dichloromethane(CH₂Cl₂) is still often used to “decaffeinate”…

A: Solubility of caffeine in CH2Cl2 is 8.35 times of H2O. a) Volume of cola = 100.0 mL Amount of…

Q: Two beakers are placed in sealed box at 25 o C. One beaker contains 30.0 ml of 0.05 M aqueous…

A: Given: Beaker 1 contains 30 mL of 0.050 M aqueous solution of non-electrolyte and beaker 2 contains…

Q: A solution of an unknown nonvolatile nonelectrolyte was prepared by dissolving 0.250 g of the…

A: Given Mass of solute = 0.250 g mass of pure solvent = 40 g ΔT = 1.8°C boiling point of pure solvent…

Q: Calculate the equivalent weight and molarity of 1.25N Al(OH)3. Show the complete solution. MM of…

A:

Q: At 55.0 ∘C, what is the vapor pressure of a solution prepared by dissolving 75.8 g of LiF in 247 g…

A:

Q: The boiling point of ethanol, CH3CH2OH, is 78.500 °C at 1 atmosphere. Kp(ethanol) = 1.22 °C/m In a…

A:

Q: saturated sugar solution at 100oC containing 487.2 g of sucrose per 100 g of water was cooled to…

A: Saturated solution is the solution which contains maximum amount of solute.  Solubility of sucrose…

Q: The normal boiling point of chloroform CHCl3 is 61.700 °C and its Kbpvalue is 3.67 °C/m. In a…

A: The elevation in boiling point can be calculated as follows,

Q: Abuela asked Mirabel to perform an experiment on freezing point depression. The solution was…

A:

Q: Ben prepared a salicylic acid in pentanol solution by adding 4.77 g of salicylic acid to 91.88 mL of…

A: Given: Mass of salicylic acid = 4.77 g Volume of pentanol = 91.88 mL MW of salicylic acid= 138.12…

Q: How much Petroleum ether acetate (75%/15%/5% v/v/v) would you need to prepare 1.5 L of this…

A: Given data,  Concentration of the stock solutions of three components are = 100%(v/v)  We need to…

Q: In regards to freezing point depression:  The original experiment calls for 3 grams lauric acid and…

A:

Q: In an organic chemistry lab, some camphor crystals were synthesized but there were some traces of…

A: We know that, ∆Tf = Kf × m where ∆Tf  is the freezing point depression, Kf is freezing point…

Q: Rese Consider the solubilities of a particular solute at two different temperatures. Temperature (C)…

A: The solubility of any compoumd can be defined as the mixing of the solvent into the solution at…

Q: While performing a distillation to separate two liquids , a small fraction was collected at 70-73°C,…

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

Q: A 15% Copper Acetate Cu(CH3COO)2 test solution is prepared using 750 ml of purified water. Where:…

A: As per our guidelines we are supposed to answer only ? 3 sub-parts ( if there are multiple sub-parts…

Q: a. What is the maximum amount of crude RDX the student can purify given this volume of acetone in…

A: As per the given information- 1 g RDX : 100 mL cold acetone 1 g RDX : 25 mL boiling acetone As the…

Q: Test Tube Solute Mass of Deionized Water (g) Mass of solute (g) Freezing Point (C) 1 None 4.140g X…

A: In test tube 2 the solute is NaCl In test tube 3 the solute is Unknown A

Q: Calculate the molality of a solution that is prepared by mixing 25.5 mL of CH3CH2OH (D = 0.789 g/mL)…

A: The mass of CH3CH2OH (solute) and the mass of CH3CH2CH2OH are determined as follows. mCH3CH2OH=0.789…

Q: A solution of rubbing alcohol is 80.0 %% (v/v) isopropanol in water. How many milliliters of…

A:

Q: Why is potassium hydrogen phthalate (KHP) used to standardize the NaOH solution instead of measuring…

A: Given:

Q: If the solubility of a compound is 0.62 g in 100 mL of H2O at 0oC and 5.18 g in 100 mL of H2O at…

A: The solubility of the compound at 0℃ in 100 ml H2O is 0.62 g. The solubility of the compound at 100℃…

Q: Three aqueous solution are given calculate the motality for these solutions, 9250 ml. of 2.90 on m…

A:

Q: A chemist attempts to prepare some very pure crystals of borax by dissolving 100g of Na2B4O7 in 200…

A:

Q: One gallon of certain lotion contains 946 mL of benzyl benzoate. Calculate the percentage (v/v) of…

A: Solution - According to the question - Given - One gallon = 3.8 liter 3.8 liter contains 946 mL of…

Q: SOLUBIITY CURVES KI 140 130 120 100 NONO 90 KNO HCI, 70 NH CI NH3 60 KCI 50 40 NaCi 30 KCIO 20 SO2 O…

A: Solution:       Solubility is mainly the property of solute (solid,liquid or gaseous state…

Q: grams

A:

Q: A capstone group working on motility of bacteria ordered TTC (Triphenyl Tetrazolim Chloride), which…

A: Given that, a capstone group first wanted to prepare a stock of 100 mM of TTC (Triphenyl Tetrazolim…

Q: Three elements such as GGG, SSS, and AAAA form a solid solution mixture. This solid mixture…

A: Percentage composition of mixture = 15% GGG + 60% SSS and rest AAA. Molar mass of GGG = 72.59 g/mol…

Q: Calculate the vapor pressure of water at 90degree celsius in a solution containing 5.00g of glucose…

A: This problem can be solved by uaing Roult's law of lowering of vapour pressure . To solve this first…

Q: When 0.33 mols of benzene is mixed vwith 0.62 mols of hexane, what is the total vapor pressure above…

A: The total vapor pressure of the mixture (solution) is the sum of the individual partial pressures…

Q: In performing an experiment on freezing point depression, the solution was prepared by dissolving…

A: Answer: This question is based on the colligative properties of solution in which on adding…

Q: Refer to the example in Techniques section 1.3. Suppose you had a mixture consisting of 20.0 g of…

A: Given : Mass of compound A dissolved at 95 oC = 20.0 g And mass of compound B dissolved at 95 oC =…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.