• Want To Do Better In Chemistry - Advice?
    4 replies, posted
Hey guys, So recently despite by best efforts of studying and practicing various chemistry problems, I'm still sitting at a resounding C in my class. I know that my grade is like that partially by one forgotten assignment (Thus bad organization, however I'm better at it). However I still struggle at Lewis Structures & Resonance Structures. I have a semi-basic grasp of Lewis Structures when it comes to even numbered valance electrons, e.g. a covalent bond (Line seen in a Lewis Structure) is made by two 'linked' electrons, one from each valance band of each bonding atom. But, beyond that, its almost impossible for me to figure out more complex lewis structures. I know resonance structures have delocalized electrons such as in benzene where they oscillate around, however I don't understand for simpler (Polarized, non-ringed) molecules what sort of resonant states will be especially with asymmetrical molecules like N[SUB]2[/SUB]O. TL;DR I need help grasping the concepts and practice of Lewis/Resonances Structures. Advice, Ways-Of-How-You've-Learned-It, Links to Advice are appreciated. Thanks
my chem is pretty rusty but don't you like count the number of valence electrons and dot them around and see which ones form a bond and make sure they all have 8 or something i honestly don't remember Seeing as this is basic chemistry i'm sure a little online searching will find you some easy tutorials on youtube or something [editline]25th October 2013[/editline] Just searching "lewis structures" on youtube gives you a bunch of hits on how to make them
While there is a chem help thread anyone willing to help me rank these bases by strength? Not the answer but how to go at the problem. I know could just look up the PKas of the conjugate acids, but I am supposed to be able to rank them without doing that. a) CH3CH2CH2CO2- b) CH3CH2CHClCO2- c) CH3CH2CH(CH3)CO2- d) ClCH2CH2CH2Co2- e) CH3CH2CChl2CO2- f) CH3CH2CH(CH3)CH2O- G) CH3CHClCH2CO2- H) CH3CH2CF2CO2- I) CH3CHFCH(CH3)CH2O-
Mol.mass = dRT/P the molar mass kitty cat puts dirt on his pee
Team up with your former high school teacher in a camper and make blue stuff
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