Stack Exchange

Karsten Theis

Westfield, MA, USA

http://www.westfield.ma.edu/academics/chemistry-degrees/faculty-staff/karsten-theis

Structural biologist teaching biochemistry. Preferred pronouns: he, him, his.

top accounts reputation activity bookmarks subscriptions
Top Questions
16 votes

How can you build a model of tetrahedral coordination from objects found at home?

home-experiment molecular-structure asked Mar 16 at 16:47
chemistry.stackexchange.com

14 votes

Is there a difference between equilibrium and steady state?

equilibrium kinetics terminology asked Mar 11 '19 at 4:46
chemistry.stackexchange.com

12 votes

Is there a name for this algorithm to calculate the concentration of a mixture of two solutions containing the same solute?

solutions analytical-chemistry concentration terminology asked Mar 23 '19 at 22:15
chemistry.stackexchange.com

11 votes

Boltzmann factor vs. graph of Maxwell–Boltzmann distribution

physical-chemistry kinetics asked Jan 31 '19 at 19:24
chemistry.stackexchange.com

9 votes

How to you show a 3-center 2-electron bond in a Lewis structure?

bond notation asked Jun 7 '19 at 13:29
chemistry.stackexchange.com

8 votes

What are the degrees of freedom that define the temperature of an ionic solid (such as sodium azide)?

temperature asked Sep 14 '19 at 11:32
chemistry.stackexchange.com

7 votes

How can you use ICE tables to solve multiple coupled equilibria?

equilibrium asked Mar 15 '19 at 18:58
chemistry.stackexchange.com

7 votes

What protects Chinese provinces other than Hubei from COVID-19 outbreak?

covid-19 asked Mar 1 at 4:01
medicalsciences.stackexchange.com

7 votes

How accurately does (pKa1 + pKa2) / 2 estimate the pH of an amphoteric salt?

acid-base ph asked Apr 28 '19 at 17:59
chemistry.stackexchange.com

6 votes

In the absence of a physical model, how can I use free software to visualize stereochemistry?

stereochemistry software asked Jul 28 at 11:56
chemistry.stackexchange.com

1 2 3

Top Answers
52
Why is '-ethane' in 'methane'?
chemistry.stackexchange.com

35
Why was Avogadro's number chosen to be the value that it is?
chemistry.stackexchange.com

21
Is there a difference between equilibrium and steady state?
chemistry.stackexchange.com

20
How were x-ray diffraction patterns deciphered before computers?
chemistry.stackexchange.com

17
Quadrupole moment of a molecule
chemistry.stackexchange.com

15
What happens in an exothermic reaction at the atomic level?
chemistry.stackexchange.com

15
Why does a tetrahedral molecule like methane have a dipole moment of zero?
chemistry.stackexchange.com

14
Why does liquid water form when we exhale on a mirror?
chemistry.stackexchange.com

13
Pauli exclusion principle
chemistry.stackexchange.com

13
How can you build a model of tetrahedral coordination from objects found at home?
chemistry.stackexchange.com

13
Distinguishing between octahedral and tetrahedral holes
chemistry.stackexchange.com

11
If you accumulate 100 identical spheres how many will end up on the surface?
chemistry.stackexchange.com

11
Why do the first and second laws of thermodynamics not contradict each other?
chemistry.stackexchange.com

11
What exactly is temperature?
chemistry.stackexchange.com

11
Why are isotopes an issue in reading mass spectra?
chemistry.stackexchange.com

10
Identify the structure of the compound (C3H5NO) given its NMR chemical shifts
chemistry.stackexchange.com

9
Reaction of phenol and zinc dust
chemistry.stackexchange.com

9
Which biphenyl is optically active?
chemistry.stackexchange.com

9
DNA pairs (adenine-thymine, guanine-cytosine)
chemistry.stackexchange.com

9
What is kekulization (in RDKit)?
chemistry.stackexchange.com

8
Why do so many biochemical reactions require enzymes?
chemistry.stackexchange.com

8
How can you use ICE tables to solve multiple coupled equilibria?
chemistry.stackexchange.com

8
Is heat just a change in temperature?
chemistry.stackexchange.com

8
Software recommendations for overlaying molecular structures
chemistry.stackexchange.com

8
Why did life end up with the big 4 elements, and specifically nitrogen?
chemistry.stackexchange.com

8
Peptide bond formation involving side chains of charged amino acids
chemistry.stackexchange.com

8
Barron states that 4.18×10⁸ joules equal 1 kcal, is this correct?
chemistry.stackexchange.com

8
Can precipitation reactions attain equilibrium?
chemistry.stackexchange.com

7
Net production of CO2 in plants
chemistry.stackexchange.com

7
Are the electrons in an atom always 'locked' with their proton?
chemistry.stackexchange.com

1 2 3