What is the buffer component ratio, (ch3ch2coo-)/(ch3ch2cooh) of a propanoate buffer that has a ph of 5.08. ka of ch3ch2cooh is 1.3 x 10-5. enter your answer with three decimal places and no units?

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)