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- What is the chemistry principle behind when (treatment: heavy cream) is subjected to CHILLED TEMPERATURE? What is the effect in beating time, stability (%drain) and volume foam (specific gravity) is important? see the data below Treatment (Heavy Cream) Beating Time (min) Stability (%drain) Volume of Foam (Specific Gravity) (Room Temperature) 20 No drain 0.94 Heavy Cream (chilled) 20 No drain 0.76 Heavy Cream with sugar and vanilla 20 No drain 0.88 Heavy Cream (over-whipped) 25 No drain 0.831. Which log is used to measure porosity accurately؟ 2. Name any 4 logs and what corresponding range of values it gives؟ 3. What is coring? Why preservation of coring is a must?Prepare the following solutions1. 250.0 mL 0.0100 M working EDTA solution from 0.1000 M EDTA 2. 50.0 mL 0.0050 M working standard Ca2+ solution from 0.0500 M Ca2+3. 25.0 mL 4.0 M MnSO4 from MnSO4·2H2O crystals
- 1. The following question tests your lab skills as well as basic knowledge understanding: (1). In Quant Lab, primary standard is defined as _______________________________________________________ . (2). In Quant Lab, secondary standard is defined as ______________________________________________________. (3). In your Lab9-Vinegar Titration, the perceived primary standard material is__________________________________. (4). In Lab9, the perceived secondary standard substance is _________________________________________________. (5). In your Lab9, the balanced titration reaction is _____________________________. It belongs to ___________ titration. At your titration equivalence(end) point, its pH equaled to ~ ___ (rough value). The pH indicator used in the NaOH solution standardization was _______________ while the pH indicator employed in the vinegar determination was _____________ ____________________ In your Lab9 report, you drew the derivative titration curve to help…Prepare 100mL of a 20%v/v bleach solution. i) What is the total volume of solution wanted? ii) What is the volume of bleach (solute) needed? iii) What is the volume of water (solvent) needed?A student performs a separation by TLC on a silica get plate that results in three spots. Ared spot is measured 23 mm away from the original sample spot, a blue spot is 42 mmaway, and a yellow spot is 49 mm away. The distance from the original spot to where thesolvent stopped is 55 mm.a) Calculate the Rf value for each component in the mixture. (Show your work and reportthe correct number of significant figures.) b) The silica gel plate is polar. Rank the three components in the mixture from lowest tohighest polarity. Explain your answer.
- 53: Which of the following most correctly describes the type of lateral pressure used during an assessment stroke? A:feather- light lateral pressure B: moderate lateral pressure C: heavy lateral pressure D: enough lateral pressure to effectively remove the deposit 54: What is the term for the dense, non-mineralized , complex mass of colonies in a gel-like inter-microbial matrix? A: feather light lateral pressure B:moderate lateral pressure C: heavy lateral pressure D: enough lateral pressure to effectively remove the deposit6. Your pharmacy has on hand Robitussin CF Syrup (guaifenesin 100 mg/1 tsp).You receive a prescription for Robitussin CF Syrup and the patient is to receive 250 mg of guaifenesin q4h. How many milliliters will the patient receive in 1 dose? If you dispense a 4oz bottle of syrup, how many doses will the patient receive?1. What volume of sterile water for injection (diluent) must be added to reconstitue the powder? 2. How many mL of the reconstituted cefazolin is needed to prepare the final product?
- Solution A is 20 degrees celsius, Solution B is 80 degrees celsius (both are the same kind of solution). The goal is to make a 50 degree celsius solution; How much of solution A do you need (starting with 100g of solution B)? (cp=4.184 J/g C)The doctor ordered Oxacillin 650mg every 6 hours. The instructions on the 2gm vial states to reconstitute with powder with 11.5ml of sterile water for injection, yielding 220mg/1.5ml. How many ml will you administer? using dimensional analysis and show work1. What would be the effect of the following errors in chromatographic work? a. The solvent level in the developing chamber is higher than the spotted sample. b. Too much sample is applied to the paper. c. The paper is allowed to remain in the chamber after the solvent front has reached the top of the plate.