John Snow's user avatar
John Snow's user avatar
John Snow's user avatar
John Snow
  • Member for 9 years, 10 months
  • Last seen this week
  • San Francisco, CA
21 votes
Accepted

Why is water "the universal" solvent?

16 votes
Accepted

Can I eat the lemons after I have used them as a battery?

14 votes
Accepted

Which chemical is responsible for making marker ink permanent?

13 votes

Why does aluminum have a lower first ionization energy than magnesium?

12 votes

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

11 votes

Why are the rare earths erbium (Er), terbium (Tb), yttrium (Y) and ytterbium (Yb) named like that?

11 votes
Accepted

Why does microwave heat up things so much more quickly than visible light?

11 votes
Accepted

What is the explanation of the changes in stability going down a group for carbonates, bicarbonates, fluorides, and chlorides?

9 votes
Accepted

Why does my coffee creamer have titanium dioxide in it and is it safe?

8 votes

Why are fluoroalkyl chains hydrophobic/oleophobic?

7 votes

Why is ammonia so much more basic than water?

6 votes

Why do we need the rms, mean, and most probable velocities?

6 votes

What forces hold ink on paper?

6 votes

What is the product of a copper and vinegar reaction?

5 votes
Accepted

Why is the ionization energy for Hydrogen non-zero?

5 votes
Accepted

Propose a chemical formula for the white solid that forms during the initial stages of the reaction of Sn with benzyl chloride

5 votes

How does epoxy stick to stuff?

4 votes

Density of unknown solution?

4 votes
Accepted

Standard electrode potential for electrolytic vs galvanic cells

4 votes

How are hot and cold defined?

4 votes
Accepted

Is there a hierarchy to functional groups?

4 votes

Writing pressure equilibrium constant expression for a reaction with a single solid product

3 votes

Computer killed by insecticide; what compounds are likely?

3 votes

Ways to change the spontaneity of a reaction

3 votes
Accepted

Is a microwave oven dangerous?

3 votes

Order of nomenclature precedence among these functional groups

3 votes
Accepted

Are all esterification reactions reversible? What is their general mechanism?

3 votes

What is the reaction between a copper anode and a zinc cathode?

3 votes
Accepted

How can a waterproofing material be "water-based"?

3 votes
Accepted

Sunscreen or sunblock