2. DECOLORIZATION Dissolve 1g of brown sugar in 15 ml. dist. Water in a small beaker and divide the solution into two equal portions. Place one portion in a test tube and add 1 g boneblack or activated charcoal and gently boil over a small flame for about 2 minutes (replace water lost by evaporation). Allow to cool and filter. How does the filtrate compare with the original solution? What property boneblack is exhibited in this procedure? How do you define this property?
Q: 4. acetic acid on the ammonium sulfate precipitation of albumin 5. presence of precipitate during…
A: Molecular techniques are important tools that help in filtration, isolation, and identification of…
Q: pls compute how to prepare the solutions 1. 100.0 mL 0.0500 M stock Ca2+ solution
A:
Q: 3. Prepare 40 ml of a 0.9% agarose gel. Work to assemble a small-sized gel apparatus and pour one…
A: Agarose gel is a matrix gel formed from red algae or seaweed. The agarose gel finds its use in…
Q: McConkey Agar has been requested by a hospital that is investigating cases of suspected Salmonella…
A: Mcconkey agar is a media for gram negative bacteria.
Q: 3. The following absorbance spectrum was collected. What color is the sample solution? Explain using…
A: As you posted multiple questions, we are supposed to answer only question as per our guidelines.…
Q: My question is: Could you explain steps? (etc. why do we heat or add chemicals like nacl or ammonium…
A: Casein is the major protein component found in milk. It is generally a phosphoprotein which is…
Q: If Ca(NO3)2 solution is added to the saturated CaSO4 solution; Solubility product of CaSO4 (KÇ)…
A: ans: The solubility of CaSO4 at 25 ºC is described by the following reaction and equilibrium…
Q: Complete the graph in generation time and answer questions in no.1
A: The generation time of bacteria refers to the time of bacteria to double in a bacterial culture. A…
Q: During extractions, it is common to add a dessicant/drying agent (such as magnesium sulfate) to…
A: Drying agents, also called as desiccants, play a major role in removal of water and other polar…
Q: Soaps that have a pH above 8.0 tend to irritate some sensitive skins. Was your soap good enough to…
A: Soap Soap is defined as the salt of fatty acid and alkali. In homes, they are used for washing,…
Q: An aqueous solution of 0.2100 g of a mixture containing potassium cyanide and potassium chloride…
A: An aqueous solution is generally a solution and here the solvent is water. It is normally defined in…
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: 1. COMPARE AND CONTRAST the GEL FILTRATION and ISOELCTRIC PRECIPITATION in terms of the principles…
A: Compare and contrast the gel filtration and isoelectric precipitation in terms of the principles…
Q: 1- Are the following changes in conditions likely to increase or decrease retention time? a. faster…
A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 6. CONSTANT VOLUME CALORIMETRY Using a bomb calorimeter, 1.0 g of benzene (CeHs), a component of…
A: A bomb calorimeter is used to measure the heat released during the combustion of a sample. The basic…
Q: After purification, the chemist wants to know the identity of the unknown compound. The person then…
A: Thin-layer chromatography is a chromatography technique that was used to identify compounds and…
Q: 4) A doctor ordered Mesalamine oral suspension 300 mg every 2 hours; direction for mixing: A 125 mL…
A: Question is related to drug calculation. Doctor ordered mesalamine oral suspension 300 mg every 2…
Q: A Read aloud V Draw E Highligh Page view 8. When the slides appear hazy or milky in the last xylene…
A: The process of dehydration is an extremely important process in slide preparation in order to…
Q: Sample contains (A, B, C, D) analyzed by thin layer chromatography using solvent system X the result…
A: Chromatography is the most important technique for isolating and purifying biomolecules. It is a…
Q: Release of drug from a 20mm gel cube (B) was tested by placing it in a large dissolution apparatus…
A: In the pharmaceutical industry, the drug dissolution test is used to observe the drug release…
Q: 14 strength Pulmocare 450mL q8h followed by 100mL of water after each feed. Calculate the mixture,…
A: Given, that 1/4 strength pulmocare 450 mL q8h has to be given followed by 100 mL water after every…
Q: 5'- CTC GAG CGA AG was obtained as a dry solid. The sample was dissolved in 1000 ul of deionized…
A: Deoxyribonucleic acid (DNA) is a complex organic molecule found in all prokaryotic and eukaryotic…
Q: 1. Prepare 200 mL of an isotonic aqueous solution of thimerosal (MW 404.84; L iso 3.4). The…
A: The given concentration of the antiinfective drug is too less that is 1:5000 (drug: solvent). i=3.4…
Q: 1. Conclude regarding the chemical composition of the formation of film in fresh milk.
A: Note: Please upload 2nd question separately, here i have given answer of question no. 1. Answer: 1.…
Q: give other urinary constituents which may reduce benedict’s qualitative solution other than glucose
A: "Since you have posted multiple questions, we will answer the first question for you. If you want…
Q: 5. Provided with the following data, compute the corresponding CFU/ml of the original culture.…
A: One of the techniques in microbiology for culturing the microbes is the spread plate technique. The…
Q: 1. what sugar causes the same color reactions with the test for pentoses? why? 2. what other…
A: Note : Hi ! Thank you for the question. We are authorized to answer one question at at time. Since…
Q: 2. Which of the following is a buffer? Why or why not? Can you give the components responsible for…
A: Buffer: The solution that can prevent the changes in acidity or alkalinity of a substance is called…
Q: 3. Imagine that you inoculated 5 tubes of BGLB for each of three dilutions, and found a combination…
A: MPN It is the estimation of number of organism group in a unite volume of sample.
Q: A 25.00 mL sample of 0.320 M LİÖH is titrated with 0.750 M HNO3 at 25 °C. Calculate the initial pH…
A: Titration is a quantitative chemical analysis to determine the concentration of an identified…
Q: IID. SAPONIFICATION The figure below summarizes the results for saponification test. Provide the…
A: Saponification is the formation of a sodium salt of a fatty acid and such a salt is called a soap.…
Q: 10% NaCl solution presents a more environment than a 5% NaCl solution. isotonic O hypotonic…
A: The solution is considered to be hypertonic if a cell with a NaCl concentration of 0.9 percent is…
Q: You have carried out an experiment using the spectrophotometry concept. A solution containing…
A: The Biuret, Lowry and Bradford methods are used for colorimetric determination of concentration of…
Q: 2. Compute for the lactic acid content of burong mustasa samples given the values below. Show your…
A: Introduction: Using The Given Formula , We Can Easily Find Out The % T.A (Expressed As Lactic Acid )…
Q: 1.What is not associated with increased skin cancer a. Arsenic b. Coal tar derivatives c.…
A: Since you have asked multiple questions, we will answer only the first question for you. If you want…
Q: Laemmli buffer, also referred to as SDS-reducing buffer, is added to each of the samples. It is a…
A: Buffer is defined as any solution that resists small change in its pH. Laemmli buffer is formulated…
Q: New December 18, 2020. The nitrite in a series of standard solutions (mg/L, n = 5) are converted to…
A: Absorbance is the fraction of intensity of light that is absorbed by a material . According to…
Q: Why does one see bromocresol green as indigo in color? You may need to do some online research as to…
A: Every molecule absorbs light at a specific wavelength.
Q: 3 solvents separation are popularly used for the of pigments in spinach. These are hexane, 70:30…
A: Plant pigments from spinach leaves when separated using column chromatography are separated between…
Q: Procedure A stock solution of 100 mg dm3 gibberellic acid should be prepared. Make a series of…
A: Gibberellins serve as a chemical messenger and disrupt the dormancy of seeds, causing them to…
Q: 2. Imagine you have mixed the following known concentrations of a solution. You then measured their…
A: A standard curve or a calibration curve is a graph plotted against absorbance of known concentration…
Q: student performs a separation by TLC on a silica get plate that results in three spots. A red spot…
A: Introduction: Thin-layer chromatography (TLC) is an important technique for the identification and…
Q: 3. For the tests listed in following table, describe the appearance of a positive result. In the…
A: Benedict’s test is performed by heating the reducing sugar solution with Benedict‘s reagent. The…
Q: 2. Which of the following reagents or tests would be useful in differentiating between n-propyl…
A:
Q: 3. Formation and Composition of Film from Milk a. Place 10 mL of fresh milk in an evaporating dish.…
A: Milk is defined as a fluid or liquid which is secreted by the mammary glands present in the females…
Q: Your pharmacy has on hand Tetracycline 250 mg/5 mL liquid. You receive a prescription for…
A: Q.1 Available dose of tetracycline - 250 mg / 5ml . Prescribed dose = 500 mg QID ( means 4 times…
Q: Multiple choice (Refer to picture) Which of the statements is NOT TRUE about the sample in…
A: Salkowski test is a biochemical assay used to detect sterols and cholesterols. Option A - A positive…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- Hi. Based on the table i need to answer the questions. The table doesnt need to be filled. Tube Solution Reaccion of color Benedict Reaccion of color mud x x x x x x x x x x x x x x x x x x x x x x x x 7 10 drops of starch solution blue Ambar 4. In the starch iodine test, which solution is a negative control? Positive? B. Use the following table to answer the questions related to the Biuret protein test (5 - 7): Tube Solution Reaccion of color 1 2 mL egg albumin Violet 2 2 mL honey blue 3 2 mL solution of amino acid Violet 4 2 mL destilled water blue 5 2 mL solution of protein Violet 5. In the Biuret test, which of the solutions is a negative control? Positive?6. Which contains more protein (C-N bonds): egg albumin or honey? Explain. 7. Do free amino acids have peptide bonds? C. Answer the following questions: 8. Why does the methylene blue dye stain the nuclei in onion cells? 9. What is…1&3/4 tbs po BID x 7 days #QS How many milliliters should the pharmacy dispense? this isnt 364 mLa. Silver reduction test: What is the substance responsible for the color production? b. Jaffe’s test: To what is the color due to? c. Ammoniacal zinc chloride test: What compound is responsible for the color? What are the pigments normally present in urine? d. Sulfates: From what substance are sulfates derived? In what conditions is sulfate elimination increased? e. Detection of Chlorides: What is the normal amount of chlorides eliminated in 24 hours? In what forms are they eliminated? In what conditions is the elimination diminished and eliminated increased? What is a threshold substance? Is chloride a substance substance? f. Detection of Phosphates: What is a triple phosphate? When it is formed? What are the sources of the phosphates found in urine?
- 1. a 1 mL stock sample is added to 9 mL Of diluent to make solution A, and then 2 mL of solution A is added to 18 mL of diluent to make solution B. what is the final dilution with respect to the stock? 2. in most probably number (MPN) testing what media is used for confirming test and what does a positive result looks like? 3. In Most probably number (MPN) testing what can be inferred from a positive result on the presumtive test?1. How do you calculate the initial concentration of a sample? 2. Indicate whether you think that the number of cfu/ ml calculated would be too high or too low if you make this mistake. ~You add 9 ml of broth (water) to each tube. You add 1 ml of culture to the first tube and mix. You get distracted, and transfer 1ml of the dilutant (mixture of culture and broth) to the third tube instead of the second. You perform the rest of the series as described. High or LOW ?Your pharmacy has on hand Tetracycline 250 mg/5 mL liquid.You receive a prescription for Tetracycline syrup 500 mg qid for 7 days. How many total milliliters would you dispense? Your pharmacy has on hand Prednisone 5 mg tablets.You receive a prescription for Prednisone 5 mg ii tabs stat and qid x 1 day, then ii tabs tid x 2 days, then ii tabs bid x 2 days, then i tab tid x 3 days, then i tab bid x 3days, then i tab qd x 4 days How many tablets would you dispense for this prescription? How many days will the patient take this medication for? Your pharmacy has on hand Dilantin 100mg capsules.You receive a prescription for Dilantin 100 mg 1 cap po in the AM & PM, 200mg (2 caps) po at noon, and 300mg (3 caps) po at hs. Dispense a 30 day supply. (using the 100mg capsules you have in stock) How many capsules will you dispense? Your pharmacy has on hand Dakins Irrigation Solution 1 liter.You receive a prescription for Dakins Irrigation Solution Irrigate chest tube with 100 mL…
- 1&3/4 tbs po BID x 7 days #QS How many milliliters should the pharmacy dispense? this is the whole question1. what sugar causes the same color reactions with the test for pentoses? why? 2. what other substances interfere with the indican reactions? 3. Why should the specimen be albumin free when performing the chloride test for urine?2. While conducting the Hydrogen Sulfide Test (SIM Agar) you open up one of the tubes and it gives off a rotten egg smell while another tube you cultured does not. What does the smell indicate? How come there was no change in color in the tube that indicated a positive test? Please explain how the color change is to occur. Think critically.
- An aqueous solution of 0.2100 g of a mixture containing potassium cyanide and potassium chloride required 14.56 mL of 0.1000 M silver nitrate to produce a faint permanent turbidity; 30.00 mL more of the silver nitrate was added (an excess) and the precipitate of AgCl and AgCN filtered off from the solution. The filtrate and washings were titrated with 13.06 mL 0.1000 M thiocyanate solution. Calculate the percentages of KCl and KCN in the sample. Note: the appearance of faint turbidity indicates the formation of Ag(CN)2-1. Place 5 mL of starch solution in the test tubes. 2. Heat the test tubes to boiling and add to 1 mL of saliva, Cool and then continue heating but keep the test tube in a water bath at temperature of 40oC 3. At 5 minutes interval for 30 minutes take a drop of the reaction mixture from each test tube and test with Iodine solution (use a spot plate for the test and stir the contents of the test tube before taking a drop). Tabulate the results. 4. What would be the color of saliva extract with iodine in 3, 6, 9,12,15,and 18 minutesMy question is: Could you explain steps? (etc. why do we heat or add chemicals like nacl or ammonium sulphate?) 1)Casein Isolation from MilkExperimental Procedure* Put 100 ml of milk in a 500 ml beaker and heat it to 40 0C. * Also heat 100 ml acetate buffer and slowly add it to the beaker with milk while stirring. * The final pH of the mixture should be 4.8. * Cool the suspension to room temperature and wait 5 more minutes before filtering. * Wash the precipitate several times with small volumes of water and then suspend it in approximately 30 ml of ethanol.Filter the suspension in the buchner funnel and wash the precipitate a second time with a mixture of equal proportions of ethanol and ether. * Finally, wash the precipitate on filter paper with 50 ml of ether and soak and dry. * Make the ether evaporate by spreading the powder. * Weigh the casein and calculate the percentage yield of the protein. * Compare with theoretical yield of 3.5 g per 100 ml milk. 2)Purification of Egg…