In HPLC, why is purging or initialization being done before analysis of samples, explain.

Q: Consider the formation of HI (g) from H2 (g) and I2 (g). H2 (g) +  I2 (g)  ⇌ 2HI (g) For this…

A:

Q: Oralife® is a white ointment containing Peppermint Oil BP 5.3 mg/g, Wool Fat BP 53 mg/g, and…

A: The 'weight by weight' or w/w is a concentration term that indicates the amount of solute present in…

Q: An analytical separation technique based on the large differences in solubilities between…

A: Analytical chemistry is used for the detection, identification, characterization of chemical…

Q: A potential of - 0.788 V is applied to a cell with Nernst Potential of -0.734 V. The internal…

A: We need to find the overpotential.

Q: answer with explanation needed...give the mechanism of given bleow reactions....give answer in…

A: In this questions, we will see the mechanism with explanation and you can see the major products…

Q: [P.], mol/L [Hz], mol/L Initial Rate, mol/(L´s) 0.0110 0.0075 3.20х 104 0.0110 0.0150 6.40 x 10-4…

A: Rate law : It is the chemical expression which expresses the relation between rate of reaction and…

Q: Br Bu,NF/ THF (iii) L: C4H3O

A:

Q: What is the importance of knowing the process of salicylic acid synthesis, given the fact the this…

A: The importance of knowing the synthesis process of salicylic acid lies in the fact that the end…

Q: 29. Describe in principle, how transmembrane proteins are purified. 30. Suggest a reason why…

A: ✓Transmembrane proteins typically have a hydrophobic midregion that have an affinity for the…

Q: Write the equilibrium expression for the each following reactions. I2 (s) + Cl2 (g) + 2 ICl (g)

A:

Q: Descriptives Bronchial reactivity 95% Confidence Interval for Mean Lower Bound Upper Bound Minimum…

A:

Q: 1. Draw a condensed formula for each of the following compounds: i. 2-methyl-2-butene j.…

A:

Q: Moving to another question will save this response. Question 15 A plate with an area of 500 cm u to…

A: Here we have to calculate the time required for deposition of gold by passing 5.2 amp current…

Q: How many grams of NaCl are in a 685 mL of a 4.5 M NaCl(aq) solution?

A:

Q: Question 1 Which of the following reagent must be used with HBr to convert 1-hexene to 1-…

A: Here we are required to predict the mechanism for conversion of hexene to 1 bromo hexane.

Q: 1. Calculate the Gibbs free energy changes, AG, by using the potential differences measured in Part…

A:

Q: Given the initial partial pressures of (Peas) = 0.0500 atm, (Prs) = 0.150 atm, and (Paz) 0.250 atm…

A:

Q: QUESTION 1 (PO1, CO1, C2) Construct two possible hypothetical paths for the calculation of enthalpy…

A: We will Construct two possible hypothetical paths for the calculation of enthalpy change of the…

Q: 0.316 grams of a sample containing chloride is taken and treated with an excess of 48.5 mL of 0.11 M…

A: Here we are required to find the percentage of chloride present in the sample

Q: -> Ô https://app.101edu.co Question 25 of 41 A patient is required to take an IV drug for cancer…

A:

Q: 2. Explain the application of Wolff-Kishner reduction reaction in synthesis of diclofenac sodium.

A: Please find the below attachments. If it is help for you please rate.   Thank you

Q: Calculate the pH at different stage of the titration when 40.0mL of 0.30N acetic acid (Ka =…

A:

Q: What will be the pH of the solution when 12.0 mL of 0.400 M KOH is added to a 25 mL of 0.200 M HOCl…

A:

Q: 3: What is the simplest coefficient in front of NO when the equation below is balanced? NH3 + O2…

A: 3) given, NH3 + O2 → NO + H2O Simplest coefficient in front of NO when the equation is balanced = ?…

Q: Rationalize the order of reactivity 5 acid amide 1 acid halide 3 ester 4 carboxylic acid 2…

A:

Q: -OH Br

A:

Q: (a) Is this reaction an exothermic or an endothermic reaction? Explain your answer. (2 marks) (b)…

A: Any reaction is exothermic if it looses energy and if it gains energy, it is an endothermic…

Q: 14.58 Complete and balance the following oxidation-reduction reactions, assuming they occur in…

A: Here we are required to balance the redox reaction.

Q: If 65.0 kg of ammonia and 80.0 kg of oxygen are fed to a batch reactor, determine the limiting…

A:

Q: 20) Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:…

A:

Q: How many moles of helium are in a 3.10 L container at 25.9 degrees Celsius if the gas exerts a…

A:

Q: 1. How can the principles that describe equilibrium and reaction rates be used to understand the…

A: 1) Principle of le chateliers can be used to predict the behaviour of the system due to the changes…

Q: 8. A student is provided with 500 ml of 600 ppm solution of sucrose. What volume of this solution in…

A: 8. Given that , Volume = 500 ml Concentration in ppm = 600 ppm = 600 mg/L Weight of sucrose for…

Q: Solve the following problem. Use GRESA Calculate in change in Enthalpy and Entropy of the Chemical…

A: Given: NH4Cl(s)→NH3(g)+HCl(g)   The reaction is spontaneous, if the value of change in Gibbs free…

Q: 14.56 Complete and balance the following oxidation-reduction reactions, assuming they occur in basic…

A:

Q: Identify the conjugate acid-base pairs: (а) CН:COОH (аq) + H:О (1) ++ CH:COO: (аq) + Н:О1 (аq) (b)…

A: An acid is a proton donor while a base is a proton acceptor. The conjugate acid-base pair differ…

Q: The hydronium lon concentration of an aqueous solution of 0.365 M morphine (a weak base with the…

A:

Q: 20. Which of the following compounds is likely to have the best water solubility? (A)…

A:

Q: With respect to the following unbalanced redox equation that takes place in an acidic environment,…

A: Give reaction  BrO3- (aq) + N2H4 (g) ---> Br- (aq) + N2 (g)

Q: Can you solve part a and b

A:

Q: A 44.3 g sample of water at 100.00 °C (specific heat of water = 4.184J/g.°C) was placed in an…

A:

Q: Net ionic equation practice problems: An aqueous solution of Silver nitrate (AgNO3) is added to…

A:

Q: 1. In this reaction, identify the Bronsted-Lowry acids and bases and their conjugates. HF (aq) + H2O…

A:

Q: A chemical engineer is studying the following reaction: CH,(9)+2H,S(9) → CS,(9)+4H,(9) At the…

A:

Q: Try Again Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction…

A: Standard free energy of reaction can be calculated using standard free energy formationof reactants…

Q: Which compound(s) would N OT react with sodium metal (Na) or with sodlum hydroxide? OCH3 II III a) I…

A: Among the given molecules, I is an alcohol, II is an aromatic ether (anisole) and III is phenol.

Q: Ph NH2 Ph H. Benzaldehyde

A: Following is the conversion of Benzaldehyde to Benzylamine.

Q: Net ionic equation practice problems: Chlorine gas reacts with potassium iodide (KI). a. Write out…

A: #1: Since Cl2(g) has higher reduction potential than I2(s), Cl2(g) oxidizes I-(aq) from KI(aq) to…

Q: Explain elaborately: 1.Explain the gluten development process. 2. Why kneading  is important? 3.…

A: ✓1-The concept of gluten can be best understood with the example of the dough we make for Rotis at…

Q: 1: The empirical formula of hydrocarbon that contains 18.4% H and 81.6% C by mass is? B) CH3 2: What…

A: Balanced chemical equation are those in which  number of atoms on left hand side and right hand side…