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- When acids are added to a solution, the pH should ___________ . a. decrease b. increase c. stay the same d. cannot tell without testingIllustrate the different solid tubed media formed 1. Deep/Butt solid tubed media2. Slant solid tubed media 3. Butt-slant solid tubed media1. 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.
- a)Determine the amount of X (in gram) in order to prepare 100 mL of 50 mM stock solution of X. Show your work. (MW of X= 225) b)Determine the volume required (mL) from the stock solution X in (i) to prepare 500 mL of MS medium containing 5 mg/L X. Show your work.1&3/4 tbs po BID x 7 days #QS How many milliliters should the pharmacy dispense? this isnt 364 mLWhich statement(s) describe(s) a microplate reader?A. It is spectrophotometerB. It can read the absorbance of one sample with adjustable path lengthC. It can handle multiple samples in parallelD. It will do all measurement jobs without our supervision a. A & B b. A, B & C c. A, B, C & D d. A e. A & C
- Why an equal volume of air is injected when performing self-saleability test for rubber closure of a vial?1. Tools that do not need to be brought when sampling is…a. thermometerb. Hygrometerc. PH meterd. DO meter 2. In the deposition method, one of the conditions that must be met is…a. The precipitate has a high solubility or solubility productb. The precipitate formed must be quite difficult to dissolvec. The precipitate formed does not have to be quite pured. Free precipitate form1. List the glassware/s and equipment you needed to measure 3.0915 grams of ZnCl 2 and dissolve it at exactly 50.00 mL using water as the solvent 2.List the glassware/s and equipment you needed in this procedure:Exactly 3.00 mL of Liquid A and Liquid B must be mixed and heated evenly
- Andrew has to prepare 30 plates (use maximum volume), 15 slants (small test tube), and 15 stabs (big test tube) of Luria Bertani Agar. a. What is the total volume of the medium needed? b. What is the amount of each component needed, given the following media composition per liter of distilled water:3. Formation and Composition of Film from Milk a. Place 10 mL of fresh milk in an evaporating dish. b. Boil and observe the formation of film. Observation: brown stain in filter paper and burn fat odor c. Remove the film and then boil again. Observation: _______________________A urine sample is diluted 1:1,000. If 0.1 ml were put into a Petri dish with melted agar, how many CFU/ml are in the urine if 158 colonies grow?
