which procedure will produce 200ml of a solution that is 2.5%by volume alcohol of water?

Q: What volume of aztreonam (50 mg/ml) must be added to 500 ml of Mueller-Hinton broth to yield a…

A: Formula used: C1V1=C2V2

Q: Which procedure would give you the diluted solution of HNO3 with a concentration of 0.200 M?

A: The molarity of a solution is given by:

Q: When checking the melting point of your impure sample, what temperature should you set as the…

A: In the event that the inexact temperature at which your sample should melt is known, the sample can…

Q: Prepare 500 mL of 10% formalin from commercial formaldehyde

A: Given Volume of Stock Solution = V1 Concentration of Stock = C1  Volume of Working Solution = V2…

Q: if you isolate more than one crop of crystal what must you do before combining them. (related to…

A: A widely adopted method in purifying compounds is recrystallization. In this method, the pure…

Q: Preparation of Ascorbic Acid Stock Solution and Dilution.    Problem: Determine the amount of 500…

A:

Q: Please ignore my work! Not sure if it is correct!  Please find the molarity of NaOH solution for…

A: The ratio of moles of solute to the volume of solution in liters is known as molarity.

Q: Is recrystallization a good method for purifying any product?

A:

Q: 8. Why should you boil the sample solution right before reaching the end point?

A:

Q: If you choose a serial dilution—what would you do?  Assume that you begin with a 1.0 M solution.…

A: 50% serial dilution translates to,1/50 dilution factordilution factor = initial volumefinal volume =…

Q: Make a Flow chart diagram of the PROCESS OF RECRYSTALLIZATION

A: Recrystallization is characterized as the interaction in which grains of a crystal structure arrive…

Q: For either of these solvents explain why it would be a better choice as a recrystallization solvent…

A: Recrystallization is a technique used to purify compound. For recrystallization, dissolving both…

Q: Consider the following scenario: After the first compound elutes off of the column, you collect…

A: We should follow these steps to avoid contamination. A. As we don't know how many…

Q: In the results video, a 1% sucrose solution tested negative with Benedict’s solution (part B3).  In…

A: Benedict's test is the one which detects the reducing sugars. Benedict's solution is an aqueous…

Q: What characteristics does a mixture need to have so that it could be separated by: A) Distillation,…

A: The separation of mixure on the basis of their physical and chemical properties.

Q: Explain the difference between saturated and unsaturatedsolutions.

A: Solution: It can be defined as that the homogeneous mixture of two or more substances. For example:…

Q: In this experiment, the eluant is O 1) petroleum ether O 2) water 3) dichloromethane 4) ethyl…

A: In the given question we have to choose the correct eluent used in the column chromatography.…

Q: 50 g of salt was dissolved in 250 g of water. Find the mass fraction of salt in the extracted…

A: Mass fraction: It defined as WB = mb/m

Q: Ex. 1: A sат, 500. ml volu mark on the resulting solu

A: Molarity is number of moles of solute dissolved per litre of water.

Q: At what step during the recrystallization would a soluble impurity be removed

A: Recrystallization :  It is a method in which solids are purified on the basis of their different…

Q: Which part of sodium stearate, head or tail, is more likelyto be solvated by water?

A: The hydrocarbon part (tail) of sodium stearate is non polar and hydrophobic in nature. It repels…

Q: Please ignore my work! Find the molarity of the acetic acid in each trial and find the mass percent…

A: The ratio of moles of solute to the volume of solution in liters is known as molarity.

Q: Why do you have to keep all the equipment hot when removing carbon in recrystallization?

A: Recrystallization is technique used to purify solid compounds.

Q: Why is important to allow the saturated solution to cool down slowly during the recrystallization?

A: Recrystallization is most useful purification technique. It is used for purify solid compounds.

Q: Can you dissolve 35 moles of Potassium Permanganate (KMNO2) into 500 mL of water? Why?/Why not?…

A: As we know that,The solubility of Potassium Permanganate KMnO4 is 6.4 grams per 100 mL of water at…

Q: Using a KMnO4 reagent that is 83 % w/w pure, prepare 250ml of a 0.3N KMnO4 solution. 2MnO4- + 5HNO2…

A:

Q: how much diluent is needed to make a 1:2 dilution 50 ul sample

A: Diluent is a substance that is used to dilute the solution. Given information: 50 uL sample…

Q: The reagent that is used in the preparation the sample and does not contain the analyte is called

A: The reagent blank is a solution that contains all the same components as in sample solution but no…

Q: a mixture containing only water and salt must be boiled to seperate the salt from water true or…

A: Yes the above statement is TRUE. But the above boiling must be done in a distillation flask.

Q: Why use plastic reagent bottle for the storage of the standard NaOH solution instead of typical…

A: NaOH is a base. It is hygroscopic in nature. Hygroscopic means tends to absorb moisture from air.…

Q: Prepare 2 liter of approximately 0.50M Nacl using solid NaCl

A: Given, Concentration of NaCl solution = 0.50 M = 0.50 mol/L Volume of the solution = 2.0 L…

Q: A top-loading weighs to + 0.5 g. How many mg is that?  Please showe step by step solution

A: Since we know that,  1 g = 1000 mg  Given, weight = 0.5 g

Q: Describe how to create a 3.0 mL sample with concentration of 1.5 x 10-4 M from a starting stock…

A: Dilution Dilution process is the process to change (decrease) the concentration of solution in…

Q: What is another factor that can influence fractional distillation’s success other than the number of…

A: Distillation process involving conversion of liquid into vapours that subsequently condensed back to…

Q: How many grams of 50 wt% NaOH (FM 40.00) should be diluted to 1.00 L to make 0.10 M NaOH?

A: In 50 wt% NaOH solution, 50 g of NaOH in 100 g of solution.  In 0.10 M NaOH solution, 0.1 mol of…

Q: 2. During heating, some solution of NaCl spattered out of the evaporating dish. How would this…

A: The question is based on the concept of experimental chemistry. We have to evaluate the impact of…

Q: B. Determining the Composition of a Mixture of Sodium Chloride and Sodium Nitrate Partner I Prepare…

A: Given the mass of the solid mixture containing NaCl and NaNO3 =  0.103 g Given the w/w % of AgNO3…

Q: What will be the soufflé’s volume after cooking? Show complete solution

A: The pressure of the soufflé’s batter remains same and we need to relate the volume change of gas…

Q: What is the mass percent of a solution prepared by dissolving 37.0g of NH4Cl in 276g H2O (show your…

A:

Q: You are tasked with performing a recrystallization. You have 3 potential solvents to use, but you…

A: The solution is given below -

Q: A student forgot to add the mass of the unknown solute in trial 1 to the mass of the solute that was…

A: Mass = ( m1+m2  ) divided by 2

Q: How do we keep relative supersaturation low by controlling solute concentration?

A: ANSWER:-Option-3 is correct. 3.Concentration should be lower.

Q: Balloon Volume of 1M Mass of lacetic acid colour NaHCOз (9) CH3COOH (mL) Pink 25.0 |4.20 Which…

A:

Q: What is the conversion of 0.50 ft³ to in³?

A: What is the conversion of 0.50 ft3 to In3 ?

Q: Vhat volume of 6.0 M KNO3 would be required to create 700.0 mL of a 0.75 M KNO3 solution

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

Q: write a stp by step procedure for the preperation of 500 mL of 0.350 M LiNO3 solution.

A: Since molar mass of LiNO3 = 69 g/mol And moles of LiNO3 = molarity X volume of solution in L Since…