general chemistry

Hi all, I have a question that I cannot find the clear answer to anywhere. For gauche interactions on Newman projections, how do we decide which gauche interaction is more stable? I came across a problem in destroyer that asks you to select the most stable Newman projection, and one structure...

The 4s orbital is lower in energy than the 3d orbital, and therefore you write 4s before 3d in the electronic configuration. Why, then, is the electronic configuration for Hafnium (Hf) the following? 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p64 d10 5s2 5p6 4f14 5d2 6s2 <-- Can someone please explain to...

I've watched all of chad's videos and done the quizzes, thought I was doing well until I started doing destroyer GC problems....:lame: I'm now rewatching Chad's videos& redoing the quizzes but I don't feel like they are helping out much. I've also been practicing with bootcamp, which is near the...

Hello! I'm selling The Princeton Review (TPR ) General Chemistry Review -- It is in great condition and entirely unsullied by writing. OBO! Please feel free to PM me for additional information and ask for additional photographs. P.S. The three practice exams weren't used and are still valid...

First post here, so please cut me a little break. Long story short, I am currently taking my second semester of organic II with the lab. All my time is focused on this at the moment. I know I need to study for the DAT, and plan to within the upcoming months. My issue is, it has honestly been a...

So I know that the averages are pretty low for the ACS finals (averages of about 50%), but I thought I could at least get a C+/B without any sort of curve. I just took the ACS Gen Chem I final today and definitely failed because I couldn't finish it on time. I did manage to bubble in D's for...

Hello all, was just wondering how difficult is General Chemistry Chem 1045 at the college level , I am a high school senior taking college classes at my local CC. I've taken Chemistry honors at the high school level this past year. Earned roughly a B average throughout the course. Just sort of...

Finished studying for my DAT! Selling my online subscriptions for cheap. Message me! DAT Genius: Expiring October 25, 2016. Asking $65 DAT Bootcamp: Expiring August 31st, 2016. Asking $40 DAT QVault Biology expiring October 16th, 2016. Asking $30 If you want to bundle up and purchase all...

Im trying to understand the concept as well as math for problem 28 in the gen chem section of dat destroyer. If there is 1x10^-12 M HCl solution is that why water needs to be incorporated in the solution? Also, the solution says 1x10^-12 + 1x10-7 is around 1x10^-7. I don't understand how that...

Hi, This is question 70 in the 2014 edition: 600 mL of a gas initially at 27 C and 755 torr will contain how many molecules? Answer: 1.5 x 10^22 molecules This answer was calculated using the ideal gas law. Even though these aren't standard conditions, should we use ideal gas law anyway if...

Hi everyone, I have seen that most schools require 2 semesters of general chemistry. However, at my school, they have transitioned to teaching only one comprehensive semester of general chemistry. I am a recent graduate looking to apply this cycle, and I am concerned about what medical schools...

@ 16:40 of Nuclear Chemistry Video Fastmode in Chad's Videos he wrote the attached picture on the board. Shouldn't the # of protons be 91, not 93? http://imgur[DOT]com/gallery/CJ8arfD It appears that my image isn't working. Anyways, what he wrote on the board was that 238, 92 U ----> 2 alpha...

Question: so in Chad's videos it is suggested that an increase in Ea (activation energy) causes a decrease in the reaction coefficient k, because an increased Ea will decrease the rate. However, in Princeton Review it is suggested that thermodynamics (i.e. Ea) are independent of kinetics (i.e...

Hey! :) First Question-- I'm aware that Chad is in some sort of dispute with course saver, but his videos are still on the course saver website. I wanted to purchase a 30 day subscription for his videos on course saver-- and tried multiple times to make a purchase-- but the website wouldn't let...

Anyone have any experience with the Gold Standard DAT prep books? I was considering ordering the chemistry one to supplement all other material that I have.

I have been working through Chad's videos and doing his quizzes after and then following up with the quizzes in the corresponding Kaplan sections. Although this is SOME practice, it is not nearly enough. I was wondering if anyone knew any resources/websites that gave extra General Chemistry...

Hi! 1. I am looking for some clarification of the relationship between these concepts. hydrophobic/hydrophilic non-polar/polar negatively charged/positively charged acidic/basic I understand that a molecule can be any of the above. But I am wondering how these are related. From my current...

What do you guys recommend is the best for reviewing general chemistry for the MCAT 2015? I took general chemistry dual enrollment as a Junior in high school at a local college and then transferred the credits to the 4 year university where I'm getting my bachelor's in biology. The course I took...

So the actual trend here is H2S<H2Se<H2Te. What I dont understant is that H2S has the strongest dipole dipole interaction and since dipole-dipole interaction is stronger than dispersion force, H2S really should have higher boiling point than H2Se but why is it the opposite?