general chemistry

"Venous blood pH is approximately 7.2. Given that pka1 for H2CO3 is 6.4 and pka2 for H3PO4 is 7.1...which of the following relationships is not true about the concentrations of various species in venous blood?" The answer is that H2PO4-is not in greater concentration than HPO42- in venous...

Hi everyone. So at my University, before you can take General Chemistry I and II, you are required to take the prerequisite General Chemistry Prep course which is worth 5 credits and has an accompanying lab. I’ve noticed most medical schools are pretty vague in that they don’t state the...

I recently got unused old EK 1001 books (between 2010 and 2012 I think) for MCAT Gen Chem and Biology. I won't be taking the MCAT for another year, but I finished gen chem and gen bio sequences, and want to keep the content sharp before I start actual MCAT prep, which is after I take all my...

Hi guys! I am currently a freshman on the pre-med track. I took general bio 1 and general chem 1 spring semester. I took the "pass" option instead of keeping my original grade of "C's". I am currently retaking general chemistry 1 again but I am not doing the best. I am considering withdrawing...

I'm about to sign up for gen chem 2 for life scientists for Winter 2020, and I'm stuck between 2 choices. There's 2 sections, and one of the professors (Prof A) is the one I have Gen Chem I with currently. His exams are easy and straightforward, but he seems to skip over some things that other...

We have space left in Dr. Romano's Summer DAT Intensive. If interested email me for more details. We also offer private tutoring for the DAT, OAT, Orgo, General Chemistry, Biochemistry, Math and more. Our instruction for private tutoring is offered in class or online. Nancy...

Hello, This is my first post so please bear with me. I received a psychology degree from a state school and graduated with a 3.9 GPA. The last year of college I decided that I wanted to enter healthcare, specifically a doctor. I had toyed with the idea before but I think I was too emotionally...

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So I just took my DAT a few days ago and wanted to post something because when I was studying I didn't see many posts that struggled with the things I did (aka QR, Gen. Chem, and RC mostly) so I thought this might help those who feel less confident about the DAT leading up to it. So for study...

Question: In a sealed 1L container, 1 mole of nitrogen gas reacts with 3 moles of hydrogen gas to form 0.05 moles of NH3 at equilibrium. What is the Kc of the reaction? The balanced equation is N2 + 3H2 -> 2NH3 The solution says that we would have (1-x)M of N2 and (3-x)M of H2, to get the 0.05M...

Should I take General Chemistry II over the summer? I’m at a community college and plan on taking it here during the summer which is 1 month and 7 days long. Or should I take it for an entire semester instead so it won’t be too fast-paced?

My book (Kaplan MCAT Gen Chem pg 27) says that for the sulfur atom in the sulfate ion, sulfur's 3s and 3p subshells can only contain 8 of these 12 electrons; the other 4 electrons have entered the sulfur atom's 3d subshell, which in elemental sulfur is empty. Why did "the other 4 electrons"...

My book (Kaplan MCAT Gen Chem pg 27) says that for the sulfur atom in the sulfate ion, sulfur's 3s and 3p subshells can only contain 8 of these 12 electrons; the other 4 electrons have entered the sulfur atom's 3d subshell, which in elemental sulfur is empty. Why did "the other 4 electrons"...

Hi, so I know that in orgo world ethers are nonpolar solvents and in an extraction the ether is the organic layer and polar water is the aqueous bottom layer (therefore water and ether don't mix). So I always assumed that ethers are insoluble in water. In the general chemistry section of the...

I was particularly confused with this question due to the fact that the answer I got when solving the problem was not one of the available choices. Why, after finding that the number of total Al2O3 atoms is ~6.02*10^21, do we multiply that number by 3 to get the number of O atoms in the...

On the 2017 OAT topics list, I don't see magnetism under Physics. Is it safe to say that I won't be seeing this topic on the test?

While I was studying for the General Chemistry section of the DAT, I encountered a question that requires the knowledge of elements' physical states at a certain temperature: Q: Consider the physical states of Cl2, K, W, Pb, Hg, Br2, and Sb. Which will be liquids at 25 degrees Celsius? Do I...

Hello SDN this is my very first post. I couldn't find an answer anywhere on on the site, but I remember looking up pre-reqs for for medical schools on the school websites and reading that one school did have an exception of some sort for this. I'm currently taking Gen Chem 2 and it includes...

Hey all, Quick question regarding the effective nuclear charge. Can't the equation for its calculation be simplified as "the number of valence electrons"? it seems that in all the examples I've seen, the effective nuclear charge is the same as the number of valence electrons. Am I just jumping...

Hey! I was wondering if someone could explain to me why we can assume Al (s) is more susceptible to oxidation compared to Zn (s). Thanks!

For real. I felt so hollow inside...there was only myself to blame. But now I'm seeing this as an opportunity to rewrite them more effectively. As neat as they were, they didnt really stick with me. Any tips on how I can write good chem notes? I want to save them for college. (chem ap)

I was going through the EK Chemistry lesson, and they explained that Guanidine HNC(NH2)2 is a stronger base than methylamine, CH3NH2. I am confused by this because I assumed that the least stable compound would be the most basic. Guanidine is resonance-stabilized, which means it should be less...

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...