Other Chemistry Answers

. Lee Kwang Soo wants to prepare a buffer with a pH of 5.00.
a) What ratio of CH3COO/CH3COOH does she need?
b) How could she mix 0.100 M CH3COOH and 0.100 M NaCH3COO to make this buffer?
c) How could she make this buffer using 0.100 M CH3COOH and 0.100 M NaOH?
d) Name another buffer system she could use.

Find the pH of the following solutions:
a) 0.010 moles HCl in 10.0 liters water.
b) 6.0 g NaOH dissolved in 15.0 liters water.
c) 5.0 ml 0.40 M HBr diluted to 20.0 liters with water.
d) 0.10 M solution of benzoic acid.
e) 0.20 M NaClO.
f) 0.20 moles HCl plus 0.10 moles KOH dissolved in 1.0 liter water.

The molar absorptivity of NADH is 6.22x10³ L. mol¯¹. cm¯¹ at 340 nm. In an alanine transaminase assay mixture of 1.0 ml, containing 20 µl serum, a change in absorbance at 340 nm of 0.600 is found after 5 minutes incubation in a 1 cm cuvette. Calculate the alanine transaminase activity of the serum.

How does the concept of synthetic disability apply to amino acid anabolism in humans?

Unknown mixture A [H2SO4 and CuSO4] Unknown mixture B [H2SO4 and HNO3] (ranged between 0.1-0.3M for the solution) (E.g. if you are using Unknown mixture B [H2SO4 and HNO3], concentration of H2SO4 will be 0.1 – 0.3 mol/dm3, and concentration of HNO3 will be 0.1 – 0.3 mol/dm3.)

Sodium hydroxide [NaOH] solution (approximately 2.0 M 1.0M) Potassium hydrogen phthalate [C8H5KO4] powder Barium chloride [BaCl2] solution (0.3 M) Copper sulphate pentahydrate [CuSO4.5H2O] powder You may choose to use spectrophotometric, titrimetric, or gravimetric methods to execute your analysis. There are no major restrictions apart from non-wasteful use of chemical reagents

how do i approach this experiment?help needed..