So I was thinking yesterday about how I’ve never even come close to having a girlfriend, and was beginning to approach the conclusion that the problem must reside in mine own self. I was on the verge of accepting this pessimistic conclusion, when I decided that rather than attempting to come to…
You should read this.
And of course, if you happen to know of or are the theoretical girl, do not hesitate to contact the author.
The cocky exponential function ex is strolling along the road insulting the functions he sees walking by. He scoffs at a wandering polynomial for the shortness of its Taylor series. He snickers at a passing smooth function of compact support and its glaring lack of a convergent power series about…
What's the fastest way to dilute a solution 10 times? Thanks! :)
Diluting by 10 is quite easy, you need, however, to use a volumetric flask. Basically you place a known concentration of original solution in the flask and fill the rest up with water. I will tell you the sure fire method of working it out, its a bit overkill for this, but damned useful in the lab!!! !!!
first, the two equations
Dilution factor= Original solution conc./Desired conc.
Volume needed = Volume of Volumetric Flask /Dilution Faction
so if you had, say, a 100M solutions and you wanted a 10M solution (ie, dilute it 10 times) and you had a 100ml volumetric flask;
Dilution factor = 100M/10M
= 10 (unit less)
volume needed = 100ml/10
= 10ml of original solution in a 100ml volumetric flask
the rest will be filled with water.
This method is redundant here, but it is very, very useful in the lab!
Two bears go for a winter walk in different geographical locations—one in Wisconsin the other in the North Pole. Both of the bears are clumsy and not paying attention, or just too damn heavy and they wind up falling through ice.
Which one dissolves faster?
Answer: THE POLAR BEAR
****EXTRA NERD POINTS*****
If you considered (even for just one second) the fact that the bear in the Northpole fell into salt water and the effect the saline solution would have on bear-solubility.
Less a question and more a giant sized thank you!
I'm a chemistry teacher just finishing up my first year, after weeks of assessments (of me and the kids), reports and stress I was feeling pretty drained and thoroughly unenthusiastic. This collection has renewed my joy - come Monday my lab is getting an entirely new look and my 6th form are getting the best damned benzene chemistry lesson ever.
Thankyou a googolplex times over ;)
1) Is it messed up that, for a time, I used to view relationships in terms of half-life?
2) Is it messed up that I still kind of view girls' moods in terms of Heisenberg uncertainty principle?
3) Is it messed up that my college chemistry teacher told us that glass is not solid but a very very viscous liquid?
1) & 2): BTDT, buddy.
3) Are you sure it’s not an amorphous solid? My nerdy classmate in 5th grade was telling me it was a supercooled liquid, and our teacher overheard our conversation and corrected us. It’s an urban legend, you can read more here and here. You have to corroborate things that you hear and read, even from textbooks and published books, but I guess it’s understandable if you don’t, because I believe we all honestly do not have the time or energy to double-check every single thing. :)
P.S. It’s okay to be messed up. (“Some people never go crazy, what truly horrible lives they must live.” - Charles Bukowski)