general chemistry

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?