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long
  • Member for 10 years, 7 months
  • Last seen more than 1 year ago
88 votes
Accepted

How do people know HCN smells like almonds?

82 votes
Accepted

Why does shaking a match put the fire out?

31 votes
Accepted

Is this poor laboratory safety?

19 votes
Accepted

What is the isomer distribution in monosubstituted fluorobullvalene?

16 votes
Accepted

What does the ‘−1’ superscript mean in units?

16 votes
Accepted

What does the "s" mean in s-cis and s-trans conformations

15 votes
Accepted

What is the lower bound to the temperature at which a fire can burn?

15 votes

Why is tetramethylsilane (TMS) used as an internal standard in NMR spectroscopy?

15 votes
Accepted

Can non-deuterated solvents be used for 13C-NMR (and in fact other nuclei)?

14 votes
Accepted

1H (proton) NMR spectra for alkanes

13 votes
Accepted

Can the amount of shielding in proton NMR caused by ring currents be predicted?

13 votes

Why don't equivalent hydrogens cause splitting in NMR?

13 votes
Accepted

Metal rod and NMR machine

13 votes
Accepted

NMR chemical shift range of different elements

12 votes

Fake smoke for a fire drill on a boat?

12 votes

How can I clean my lab coat?

12 votes
Accepted

Can molecular structure be determined without modern characterization methods?

11 votes
Accepted

Why are we not supposed to heat Erlenmyer flasks?

11 votes

Sources for raw 1H-NMR data?

11 votes
Accepted

What is the priority for numbering alkyl side chains?

11 votes
Accepted

How do I find out what benzene containing compound this is with IR and NMR?

10 votes
Accepted

How to interpret the MSDS warning?

10 votes
Accepted

Strange 1H-NMR signals/signal ratio

10 votes
Accepted

What is the compound called when it is in solution?

10 votes

Why do NMR samples require a solvent?

10 votes

Which nuclei are NMR active?

9 votes
Accepted

How would you separate sugar from water?

9 votes

Why do hydroxyl groups only produce a singlet in proton NMR?

9 votes
Accepted

Historically, how was the connection between NMR peaks and hydrogen atoms made?

9 votes
Accepted

Smoke cobweb formations?

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