How would you prepare 250ml of 0.035M sodium sulfate solution?
Describe steps starting from calculating amount of sodium sulfate
to final volume. What is the ionic strength of this solution
(assuming the salt is ionized completely). (MW of Sodium sulfate
(decahydrate) = 322.20)
Describe how you would prepare a liter aqueous
solution of each of the following reagents
(a) 1 M glycine
(b) 0.5 M glucose
(c) 10 mM ethanol
(d) 100 mM hemoglobin
How would you prepare 1.56L of a 0.120 M NaOH solution from a
1.20 M
NaOH solution?
A flask contains 55.0 mL of a hydrochloric acid solution. The
molarity of the solution is not known. It
takes 23.5 mL of a 0.103 M sodium hydroxide solution to complete
the reaction with hydrochloric acid. What is the molarity of the
hydrochloric acid solution?
Describe how to prepare a 20.00 ug/ml iron solution from a 1,000
mg/ml iron standard solution using 10-ml and 50-ml volumetric
pipets and 500-ml and 1,000-ml volumetric flasks.
A)how would you prepare 250 ml of a 0,150 m solution of CoCl2
from solid CoCl2 and distilled water?
b)using the solution from part a and ditilled water,how would
you prepare 100 ml of a 0.0600m solution of CoCl2?
c)What absorbance would you expect from the solution from part b
at the wavelength of maximum sensitivity?
Describe how you would prepare 2 mL of solution containing NaCl,
MES buffer, and water. NaCl stock solution is 1M and the working
concentration required is 5mM. MES buffer stock solution is 100 M
and the working concentrations required is 20 mM. To make 2 mL of
solution calcualte the amount of water you would add.
Please Show Work
Describe how would you prepare the GTE (50 mM Glucose,
20 mM Tris, EDTA) Resuspension Solution for use in a mini-prep. You
have the following stock solutions: 0.5 M glucose, 0.2 M Tris-HCl
(pH 8.0), 0.5 M EDTA (pH 8.0).
How would you prepare 150 mL of GTE re-suspension solution using
the above stocks?
Also, describe how to prepare the solution in
appropriate container and aseptic technique.