Calculate the Rf value if a solute travelled 5 cm from the base spot and the solvent front is 10 cm from the origin?

Q: Given .750L of a 12M HCI solution, what volume of 5.00M HCI could you make?

A: Dilution formula is N1V1 = N2V2. N1 = normality before dilution. V1 = volume of the solution before…

Q: 18. (0.1) Is it possible to use UV-VIS spectroscopy to quantify a non- absorber species? Provide a…

A: The spectrometer measures wavelengths of electromagnetic radiation (light) that interacts with a…

Q: prepare 250ml of 0.10 m NaOH from solid NaOH and water

A: Molarity: The moles of a solute per litre of a solution is called as molarity (M).

Q: Define the term Tonicity of Solutions?

A: Any solution has 2 components – solute and solvent. Solute is substance which gets dissolved and…

Q: Calculate the molarity (M) of a 46% (w/v) copper sulfate solution (m.w. = 160.0 g/mol)

A: Molarity is the number of moles of solute per litre of solution.

Q: Explain electrostatic screening by a water molecule within a living cell.

A: To explain  The electrostatic screening by a water molecule within a living cell.

Q: How many ml 2M NaOH would it take to neutralize 20 ml of 0.5M HCI?

A: Given: Concentration of NaOH , M1 = 2 M Volume of NaOH, V1 =? Concentration of HCl, M2 = 0.5 M…

Q: Explain how the following will affect blood film or smear a. Humidity b. Temperature c. Speed d.…

A: White blood cells (WBCs, leucocytes), red blood cells (RBCs, erythrocytes), and platelets can all be…

Q: The column efficiency is constant for a column that uses a cons tant eluent composition. What does…

A: The question is related to chromatography which helps to separates compounds from a mixture of…

Q: The elution order does not match the expected order for coconut oil and the peaks do not match.…

A: Introduction:- The wick, meat, and milk of the coconut palm fruit are used to make coconut oil, an…

Q: A chromatographic separation of four compounds gave the following results. The dead time (tm) is…

A: Chromatography is a technique for separating a mixture in the laboratory. The combination is…

Q: Write shortly about the instrumentation of ATR spectroscopy?  Answer should be to the point.

A: ATR(Attenuated Total Reflectance), is the sampling technique used in infrared spectroscopy (IR) to…

Q: The colligative properties depend on the concentration based on the solvent. True O False

A: The given statement is true . The colligative properties depend on the concentration based on the…

Q: Why did the blank used in experimental procedures contain substrate, buffer and water?

A: A blank or blank determination is an analysis without a sample (Enzyme). Any enzyme assay requires a…

Q: Why is it important to select immiscible solvents when performing liquid-liquid extraction? In…

A: Liquid-liquid extraction is a process of separating components present in solutions by their…

Q: What is the relationship betweenpKa and the useful range of a buffer?

A: The strength of an acid in a solution can be expressed in terms of the acid dissociation constant…

Q: calculate the amount of urea if the patient urea nitrogen is 800mg/L?

A: Urea is the principal end product of protein and amino acid catabolism. Molecular weight of urea…

Q: Calculate the average dipole–induced-dipole interaction energy, in joules per mole (J mol−1),…

A: Interaction energy is the energy released or required for binding of two molecules together. It…

Q: The pH probe/meter uses following equations: Ecell = L + 0.0592 log a1 = L - 0.0592 pH Where L =…

A: Asked : Effect on measured pH value if acid concentration is increased  HCl is an acid

Q: If the equation produces from data is y = 0.300x - 0.857 and the absorbance for the unknown is…

A: Note: Since you have posted multiple independent questions in the same request, we will solve the…

Q: give the respective the TOTAL DILUTION FACTOR of respective serial dilutions. show complete…

A: Introduction: A serial dilution is any dilution in which the concentration decreases by the same…

Q: Why are quantitative absorbance measurements made at lambda max?

A: Introduction :- Using spectrum of wavelength , different levels of absorption can be calculated. It…

Q: What wavelength is most suitable for quantitative analyses for an analyte exhibiting the UV-Vis…

A: Quantitative analysis is the method of determination of concentration of an analyte where teh amount…

Q: You have a stock solution of 40% hydrogen peroxide. You need to make several dilutions for a…

A: Dilution of Hydrogen peroxide (H2O2): Dilution of Hydrogen peroxide (H2O2), is carried out by adding…

Q: what is the standard concentration for solutions in an electrochemical cell?

A: An electrochemical cell is a battery that can either produce electrical energy from chemical…

Q: Would a sample solution that has a high absorbance reading, have a low or a high concentration

A: Absorbance is a number that measures the diminishing of the transmitted radiant power in a solution.…

Q: How many grams of copper sulfate would you need to make 5 L of a 7 M copper sulfate solution?

A: Molarity is defined as the moles of solute per litre of the solution. Hence, our target is to make…

Q: what does it mean if a pigment (let' say 'yellow') traveled beyond the solvent front in paper…

A: Paper chromatography is the process of separation technique which involved in speraration of…

Q: Calculate the protein concentration (in mg/ml) of an unknown sample with an absorbancy value of…

A: Bradford method of protein estimation is quick and simple method of protein estimation using…

Q: If a liquid contains 3 mg of drug in 40 mL, what is the milligram percent of this solution? Round to…

A: Drug calculation is an essential component of drug administration. As Nurses we need to understand…

Q: e tra led by the solvent Distance travellad bu

A: Chromatography is a technique by which we separate molecules from a mixture. In this technique, we…

Q: Define water activity and briefly describe how it can be determined. Why is it difficult for…

A: The tiny organisms that cannot be observed by unaided eyes are the microorganisms. The microbes…

Q: Calculate the molarity (M) of a 65% (w/v) copper sulfate solution (m.w. = 160.0 g/mol).

A: The molarity of a solution is defined as moles of solute in per litre of solution. To calculate…

Q: Calculate the pH of the solution that results following addition of 10 mL of 1 M NaOH to 40 mL of 1…

A: Henderson-Hasselbalch equation gives the pH of the solution and relates to the concentration of…

Q: Make a standard curve by using the values given in the table and determine the concentration of…

A: Bovine serum albumin or BSA is used for standard curve preparation because of its stability. The…

Q: Calculate the pH of a solution if  [H3O+] = 3.4 x 10-2M Indicate whether the solution is acidic,…

A: To calculate the pH of the solution The concentration of hydronium ion given as 3.2×10-2M.

Q: Explain the practical application of knowing the charge of ions? Cite feasible example.

A: Atoms don't possess electric charge ,when they acquire electric charge,they are called ions. Ions…

Q: How much liquid media should you put in your dilution blank if you wanted to serially dilute a1 ml…

A: Serial dilution of the original sample containing microorganisms to achieve countable colonies on…

Q: a) proportional to the charges on the two interacting atoms. b) proportional to the dielectric…

A: Electrostatic interactions are found to be a strong factor that determines the conformation of…

Q: During transfer of liquids using a micropipette:

A: Micropipettes are used in laboratory to measure volumes less than 1000 uL or 1 mL.

Q: Discuss briefly Mössbauer spectroscopy. the principle of

A: Spectroscopy is the study concerned with the measurement of spectra produced when a substance…

Q: Calculate the molarity of dilute Ca(OH)2 solution if the titration of 30.00 mL of 0.05231 M HCl…

A: Given : 30.00 mL of 0.05231 M HCl For this , n 2=1 as 1 hydrogen ion is present V2= 30 ml M2 =…

Q: Two compounds have Rf values of 0.50 and 0.61, respectively. The solvent front on a plate is…

A: Chromatography technique is used to separate mixtures. In this technique, there are 2 phases,…

Q: and obtained an Rf value of 0.5. If you changed the solvent system to 50% hexanes / 50% ethyl…

A: Separation of compounds in Thin Layer Chromatography (TLC) is done with the help of Retardation…

Q: What information do we get if we calculate the ratio of the Absorbance value at 260 nm to the…

A: A spectrophotometer is a device that is used to calculate the absorbance of light passing through a…

Q: Briefly describe how you would make 500 mls of a 1X electrophoresis running buffer from a 15X stock…

A: Electrophoresis buffer: Electrophoresis buffer can be Tris-acetate EDTA (TAE) or Tris-borate EDTA…