Yoo

This page lists questions and answers that were posted by visitors named Yoo.

Questions

The following questions were asked by visitors named Yoo.

A hypothetical diprotic acid has pKa1=5 and pka2=7. Could a buffer at pH6 be prepared with this acid? If so how?
15 years ago
Tarnished silver contains Ag2S. The tarnish can be removed by placing silverware in an aluminum pan containing an inert electrolyte soln, such as NaCL. Explain the electrochemical principle for this procedure, [The standard reduction potential for the hal...
15 years ago
Describe the electrolysis of an aqueous soln of KNO3
15 years ago
for oxidation number of Fe(CO)5 I don't understand why Fe is zero
15 years ago
What does relocalization within this text? what does relocalization mean within this text "A sane urbanism has to mean an intense commitment to RELOCOLIZATION, specifically to local economies. It means not spending $8 billion dollars to expand highway cap...
15 years ago
I did a lab about melting point. It is asking me for the purity of the compounds? How do I find it? Do I use melting points or percent yield?
15 years ago
standard free energy change of -11.70 kJ mol-1. Calculate equilibrium constant for 25 degrees C. I got 7.772..and it's wrong I did -11700J/ (-2.303 x 8.314 x 298)= 2.0505277 and then e^(2.0505277)= 7.77 I don't know what I did wrong
14 years ago
in gas chromatography, why do E1 and E2 give different peaks (areas) though it's the same compound?? For example, for 1-butene, the percent composition is low in E1 but very high in E2.
14 years ago
rank strongest acid to weakest acid? rank strongest acid to weakest acid H3CNH2 CH3C (triple bond) CH CH2=CHCH3 H20 CH4 i tried to rank them using the Pka values but I couldn't find the pKa value of the alkyne and I thought the H3CNH2 was the strongest bu...
14 years ago
what other experiments or techniques can be used in replace of infrared spectroscopy
14 years ago
What is the sum of –3.8 + 9.8 + –5.7? A.-19.3 B.-0.3 C.0.3 D.19.3 The Answer is C. 0.3
3 years ago

Answers

The following answers were posted by visitors named Yoo.