chemistry

[sprinklethief]

74 people have dropped the class already. i guess our teacher is a research chemist and has to teach this class to keep his job with the university. he's not happy about it. he's trying to get people to fail out or just plain drop to underline how unhappy he is about teaching this class.

also, conversion factors? you can suck the shit out of my ass. this is why i have a calculator. why can't i just use a goddamn calculator?

i actually purchased a "complete idiot's guide to chemistry" to get a better grasp on conversion factors and they didn't go far enough into it. jerks.

and i got yelled at in creative writing for not making any sense. see if i ever share writing from a schizo episode again. here i thought the "creative" part was gonna make this class different. maybe i'll just say fuck a lot because it's college and i can. i very rarely share my writing, and i finally do to 24 total strangers and "this makes no sense, bleaaaah!" MAYBE THAT WAS THE POINT YOU IDIOT! READ THE WORDS! ::bashes head into... i don't know, something that doesn't make sense:: some douche totally rips off bob dylan and gets girls swooning and i'm "disturbing" and "scary" whatever.

rargh.

Comments

[flurbins.livejournal.com]

given 1 mile = 1.609344k, then...
55 mph to k/s would be set up like this.

55 miles/1 hour x 1 hour/60 minutes x 1 minute/60 seconds x 1.609344k/1 mile.


Remember cancelling out factors, like 3/2 x 4/9 would be 1/1 x 2/3?
Same concept, but you're doing it with units. So since there's no miles or hours in the final answer, you need to have units to cancel out. Since you have miles on top (55), you need kilomoters over miles (1.609344k/1 MILE). Then you can cancel out the word (unit) miles, since it appears exactly once on top, and once on bottom. Same thing with hour.

[flurbins.livejournal.com]

You are given the miles to kilometers conversion, right?

Oh yeah, don't forget, just because it says miles per hour, doesn't mean you can't wright it like 1 hour/55 miles. It doesn't matter which is on top or bottom really, so do what you need to so you can cancel out the units.

[flurbins.livejournal.com]

One more thing I thought of that may help. You can multiply anything you want by the number 1 as much as you damn well please. That's why I put in 1 hour/60 minutes (equals 1), and also 1 minute/60 seconds (also equals 1). Multiplying an equation by 1 doesn't change shit, so that's where all your intermediate conversions come from.