|
The Aardvark posted:If you multiplied by 213, just had to divide by 3 since 3 nitrogen. Just a manipulation of the order of steps is all. Last question, why are we breaking N down by 3, why aren't we trying to find it for N3? I'm confused as heck why it is being found for the individual N when it's N3 in the compound.
|
#
?
Feb 25, 2020 05:26
|
|
|
|
| # ? Jun 7, 2024 01:35 |
|
|
If the compound is Al(NO3)3, then it's not an N3, it's three NO3's For the stoichiometry it doesn't really matter, but it will matter when you get to redox
|
|
#
?
Feb 25, 2020 05:33
|
|
|
Because you're looking for the amount of N as atoms, not N3 as a molecule. Nitrate is not azide.
|
|
#
?
Feb 25, 2020 05:33
|
|
|
Got it. Thank you for the help, I may be throwing more questions out here. Especially considering since I'm going to try and bang out inorganic 1 and 2 over the summer. Because why have free time?
|
|
#
?
Feb 25, 2020 05:37
|
|
|
I'm available to help goons with chem since I've graduated and have free time. PMs are fine. I'll also add basic biochemistry to this as I did some of that too Also do people call gen chem inorganic now or something? The Aardvark fucked around with this message at 05:44 on Feb 25, 2020 |
|
#
?
Feb 25, 2020 05:40
|
|
|
I did, I thought that's what it was since there's inorganic and organic chemistry as fields? I dunno, that's how it got told to me when I was younger by my aunt the organic chemist PhD and my uncle the inorganic chemist PhD. They worked for the DOD their entire careers. They died of a cancer linked directly to a chemical they used to clean glassware. This was all to win the Cold War so I guess it's good they are dead and not seeing what's going on now? I dunno. That's my story.
|
|
#
?
Feb 25, 2020 05:44
|
|
|
Ah. Inorganic chemistry is a part of chemistry that deals mostly with metals and organometallics. Usually in undergrad education you get into inorganic after taking achem, ochem, and pchem.
|
|
#
?
Feb 25, 2020 05:48
|
|
|
Wow, I'm learning a lot here. So gen chem 1 and 2 over the summer. Ok thanks crew, this was super helpful.
|
|
#
?
Feb 25, 2020 05:50
|
|
|
Gen chem is where you "learn" the foundations of chemistry to find out in upper classes "Weeeellllllll what we told you then wasn't totally the truth." Looking at you ochem. The Aardvark fucked around with this message at 05:55 on Feb 25, 2020 |
|
#
?
Feb 25, 2020 05:53
|
|
|
maffew buildings posted:Well that makes more sense. So I was running 3.22x10^22/6.022x10^23 then multiplying by 213 and trying to figure out the g of N via the percent comp of N3 in the molar mass. Thank you. No problem my dude, I'm glad I can be useful with something what with how lamely these past few months have been going. The great thing about math is that you can perform complementary functions in any order. If you are adding or subtracting, order doesn't matter. If you are only multiplying and dividing, the order doesn't matter. 6*4/8*9 is 27 the same way 9*6/8*4 is also 27. The order doesn't matter until you are combining addition, multiplication, parentheses, exponents, and what not. And once you've figured out the stoichiometry and the molar mass of the compound you're using, all you will need is that molar mass, how many of each element is in the compound and how many moles you have of something. The main things from this part of chemistry is to just keep things as simple as possible. If you're doing a lot of math, you might be doing it wrong, and there's a simpler way to do it. Also, make sure you understand that these calculations go both directions. You can figure out how much Nitrogen you have, but you can also take grams of Nitrogen to figure out how much Al(NO3)3 you have. This got a bunch of people in my chemistry class. The professor would have us practicing one way while learning, and then have us go the other way on the test. I think people just memorized how to do it by rote without actually understanding what they were doing. Understanding the concept is the most important thing. If you understand what it is that you're doing and why you're doing it, you will never be caught up during a test.
|
|
#
?
Feb 25, 2020 19:13
|
|
|
Learning update - I'm starting to get really down with this chem and math thing, despite how it makes my brain feel like it is on fire. Is that normal?
|
|
#
?
Feb 27, 2020 06:21
|
|
|
You're supposed to do whippets to cool it down. That's about how I felt starting up with statistics after ten years, just keep motivated. lightpole fucked around with this message at 06:33 on Feb 27, 2020 |
|
#
?
Feb 27, 2020 06:31
|
|
|
maffew buildings posted:Learning update - I'm starting to get really down with this chem and math thing, despite how it makes my brain feel like it is on fire. Is that normal? As a totally not biased person, yes.
|
|
#
?
Feb 27, 2020 06:33
|
|
|
I consulted another forums user and professional math doer asking if how I was putting off other studying to do math, doing the same problem over and over because I miss a minus sign, getting overly caffeinated and sweating, working for hours straight and being up with racing thoughts at night about the stuff I'm working on was unusual and he said that meant I was starting to get it. So, this is going to be a fun few years.
|
|
#
?
Feb 27, 2020 06:43
|
|
|
Now it is your turn to study statistical mechanics. edit: context 
Vasudus fucked around with this message at 14:57 on Feb 27, 2020 |
|
#
?
Feb 27, 2020 13:04
|
|
|
So glad I'm an English major. I skated through by taking political statistics as my lone math class. That said, if any of you need copy editing for your term papers this semester, let me know. I'm happy to take a look and help punch up your prose.
|
|
#
?
Feb 27, 2020 14:25
|
|
|
I thought I was done with math forever after college algebra but then I decided to make my anthropology slightly more useful by adding an international affairs double major and now I have to take macro and micro econ. I’ve scammed myself once again.
|
|
#
?
Feb 27, 2020 17:52
|
|
|
My biggest collegiate regret as a young Buildings was I didn't go ham and get a BS in Anthro. Have you considered that? You can carbon date bones and teeth. For decades.
|
|
#
?
Feb 27, 2020 18:09
|
|
|
My bachelors is a dual major in Anthro and GIS. I ended up as a GIS marketing analyst, which is fine. But when I do grad school it'll be in Anthro.
|
|
#
?
Feb 27, 2020 18:41
|
|
|
Yeah science is pretty great. Definitely learned a lot more in my physics / anthro / microbiology classes than I did in all of my humanities courses.
|
|
#
?
Feb 27, 2020 18:51
|
|
|
What do you all use for word processing alternatives these days? For the first time in eons, i don't have a school provided email address, and I'll be damned if I'm actually going to shell out for MS Office.
|
|
#
?
Feb 29, 2020 19:15
|
|
|
Suntan Boy posted:What do you all use for word processing alternatives these days? For the first time in eons, i don't have a school provided email address, and I'll be damned if I'm actually going to shell out for MS Office. I've used Open Office and it works well with Office stuff. https://www.openoffice.org/
|
|
#
?
Feb 29, 2020 19:18
|
|
|
I just use google docs when I'm not near my home computer.
|
|
#
?
Feb 29, 2020 19:21
|
|
|
Suntan Boy posted:What do you all use for word processing alternatives these days? For the first time in eons, i don't have a school provided email address, and I'll be damned if I'm actually going to shell out for MS Office. I buy cheap MS Office keys off of Goons in SA mart. For less than the price of a video game, I can get the entire Office suite and the savings from using something else isn’t worth the effort it’d take to learn how to use it.
|
|
#
?
Feb 29, 2020 19:24
|
|
|
Keys? How often do you have to buy Office?
|
|
#
?
Feb 29, 2020 19:28
|
|
|
Cojawfee posted:Keys? How often do you have to buy Office? I have five computers.
|
|
#
?
Feb 29, 2020 19:31
|
|
|
All about that Google Docs so I can rough out a couple paragraphs on the busride to campus
|
|
#
?
Feb 29, 2020 19:32
|
|
|
If you really hate yourself you can use LaTeX.
|
|
#
?
Feb 29, 2020 20:09
|
|
|
Right, I could've mentioned that I use Google Docs extensively after Office ate one too many papers. I just use local software for final cleanup/formatting, since stuff like APA reference pages is a pain with Docs. Need more/stronger coffee. What's the verdict on LibreOffice? I'm a very lazy man, and some of the extensions look pretty appealing.
|
|
#
?
Feb 29, 2020 20:11
|
|
|
Google office suite was super handy in my college degree for anything where you had to collaborate with fellow students. Even so, I really needed Office to write anything that included math symbols. I realize that's not a universal concern, and LaTeX mentioned above might honestly be a better option if you're doing a whole lot of math/science writing
|
|
#
?
Feb 29, 2020 20:40
|
|
|
Libre is solid. I use that instead of even bothering with Officep
|
|
#
?
Feb 29, 2020 22:40
|
|
|
Chem crew, question, if I'm finding number of atoms of O in CO2 for 16.0g of the compound, it's going to be grams CO2 to moles CO2 to atoms and then it's the percent ratio of O2 in CO2 for the final answer, yeah? Or am I off the mark? Apologies if not explained well. I had a chem exam and it may have gone very poorly, the multiple choice did at least.
|
|
#
?
Mar 4, 2020 01:05
|
|
|
Stick with the stoichiometry. Find the molar mass of CO2, then go from grams of CO2 to moles of CO2. If you have 1 mole of CO2, and there are 2 oxygens in the molecule, then you have 2 moles of Oxygen. So multiply by 2 and then multiply by Avogadro's number to get number of atoms.
|
|
#
?
Mar 4, 2020 01:34
|
|
|
Isn't that a total of atoms of C and O2, though? How is that just the O atoms?
|
|
#
?
Mar 4, 2020 01:54
|
|
|
CO2 is made up of three atoms, one carbon and two oxygens. 1 mole of CO2 is made up of 1 mole of carbon and 2 moles of oxygen.
|
|
#
?
Mar 4, 2020 02:27
|
|
|
I'm just going to DM you I don't know if this is a productive derail for the thread.
|
|
#
?
Mar 4, 2020 02:32
|
|
|
Don't do percent ratios. You may think O2 is 66.67% of CO2 but it is actually 72.73% when you use mass.
|
|
#
?
Mar 4, 2020 03:26
|
|
|
I got 72%. The ratios are easy as h*ck, I just don't understand how you take the molar mass of CO2 to get the atoms of O2 and like, don't isolate the O from C.
|
|
#
?
Mar 4, 2020 03:48
|
|
|
My local community college has a one semester certificate, I'd like to get, and I have a month left on my GI Bill to pay for it. Would I be able to pursue that after graduating with my bachelor's?
|
|
#
?
Mar 4, 2020 19:23
|
|
|
|
| # ? Jun 7, 2024 01:35 |
|
|
As far as I know, if you have one day left on your GI Bill, it extends out to finish whatever term you use it in.
|
|
#
?
Mar 4, 2020 19:46
|
|