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- 1. Conclude regarding the chemical composition of the formation of film in fresh milk. 2. Why does fresh milk can form a film and sour milk cant?1. What happens if you try to use the coarse adjustment when the10Xlens is in place?What microscopic methods would be suitable for studying (a) the morphology of crystalline polymers, (b) surface oxidation in a hydrocarbon polymer, (c) the structure of the beads used in a GPC column, (d) suspected gel particles in branched polyethylene (e) How may x-ray diffraction data be used to estimate the sizes of polymer crystallites?
- 5) Why are the streak plates made from a sample of coconut water incubated at 7°C?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?1) A solution is made by combining 128 mL of ethanol and 0.452 L of water. In this solution, what is the solvent? What is the solute?2) If a solution contains 128 mL of ethanol and water to make 0.452 L of solution, what is the (v/v)% concentration?3) How many grams of sodium carbonate are needed to make 350 mL of a 0.5% (w/v) sodium carbonate solution?4) What is the molarity of a magnesium chloride solution made by dissolving 8.7g of magnesium chloride in 2.45 L of water?5) An exercise in lab requires you to make 500 mL of a 2.3M beryllium sulfide solution. How many moles of beryllium sulfide will you need?6) How many grams of sodium chloride are needed to make 0.60L of a 2.3M sodium chloride solution?7) How hot must the air in a balloon be heated if initially it has a volume of .750 L at 20°C and the final volume be 1.00 L?8) Convert 455 mmHg to atm.9) A container of gas has an initial pressure of 0.8 atm. The pressure is increased to 1.1atm and the final volume of gas is 2.3 liters.…
- 9. Find the final concentration as a percent (w/v) of dextrose when 75 mL dextrose 50 % (w/v), 50 mL of sodium chloride 0.9 % (w/v), and 100 mL of dextrose 5 % (w/v) sodium chloride 0.45 % (w/v) solution are mixed together.3. Explain acid fast staining?3. Explain the following terms and what are its corresponding requirements for Raman applications: a. Confocal microscope b. Numerical aperture c. Infinity correction d. F-number
- what is 3 ocular units, 4.2 ocular units, 5 ocular units, 3.6 ocular units, and 8 ocular units in micrometersI have: DMEM:F12 800X ITS 1.07 g/ml Linoleic acid Nu-serum (pure solution) BSA (pure powder) How much of each would I need to make 500ml of (1x ITS, 7.49 ug/ml linoleic acid, 4% v/v Nu-serum, 0.15% W/V BSA, and DMEM:F12 as the solvent)?4. How does the light compound microscope magnify an object? Outline the process5. Explain why an inverted image is seen under a compound microscope.6. What is the purpose of the oil when using oil immersion objective?
