QUESTION 2 2.1
The number of bacteria in the samples need to be quantified. The laboratory uses a specific
protocol where the dilution factor on the spread plates must be:
10^-3 10^-4 10^-5

Describe how you would prepare the required dilution series using the least amount of dilution
water.

2.2
Calculate the amount of bacteria in the sample from the following results (show the steps in
the calculation):
Dilution factor count
10^-3 289
10^-4 31
10^-5 2

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You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

What type of matter is made of only one kind of atom