Search found 616 matches

by NS_Tutor_Mathias
Wed May 13, 2020 3:23 pm
Forum: AAMC Resources
Topic: MCAT Official Prep Chemistry Question Pack
Replies: 1
Views: 1040

Re: MCAT Official Prep Chemistry Question Pack

#10: Sodium ion definitely does not form an ionic compound in water - it forms a hydration shell, where the negative end of the dipole in water (so the end on oxygen) is attracted to sodium cation. This has no major effect on the pH of the solution. Carbonate however is the conjugate base of a weak ...
by NS_Tutor_Mathias
Wed May 13, 2020 3:09 pm
Forum: AAMC Resources
Topic: Chemistry Q Pack Passage 6 Q 66
Replies: 1
Views: 936

Re: Chemistry Q Pack Passage 6 Q 66

Imagine a saturated fatty acid. No isomerism is possible, as no stereocenters are present. Now imagine a single double bond in there, making this fatty acid unsaturated. Now, both the cis- and trans-isomer are possible. Isomerization is just the process of changing from one isomer to another. So say...
by NS_Tutor_Mathias
Wed May 13, 2020 1:32 am
Forum: Post Questions About Exams and QBank
Topic: NS FL6 B/B Q3
Replies: 1
Views: 816

Re: NS FL6 B/B Q3

Make sure you've scrolled down all the way to figure 2, the 29 AA primary structure of glucagon. There you can verify them yourself! If this remains in any way mysterious, I'm happy to list them for you - but I feel the exercise might do you more good. (I am, really, more than happy to help out thou...
by NS_Tutor_Mathias
Tue May 12, 2020 2:01 am
Forum: AAMC Resources
Topic: Chemistry Q pack Part 1
Replies: 1
Views: 1777

Re: Chemistry Q pack Part 1

Woah buddy, those are a lot of questions! But here you go :) 1. Sure, as long as you understand that this is because it generates hydroxide anion. 4. Unfortunately the half-filled orbital story is a drastic oversimplification. Most sources and exams will only want you to cite this 'rule' for chromiu...
by NS_Tutor_Mathias
Mon May 11, 2020 4:03 pm
Forum: General Discussion & FAQ
Topic: New Schedule
Replies: 1
Views: 1238

Re: New Schedule

Hi there! If you're in a big slump, first thing to do is take a day or two off. Don't even look sideways at your MCAT materials. If that makes you too anxious, I guess take something with you to wherever you go to relax. At least things I read in odd places are usually pretty memorable, even if I do...
by NS_Tutor_Mathias
Sun May 10, 2020 4:19 pm
Forum: AAMC Resources
Topic: AAMC Psych/Soc Section Bank #9
Replies: 1
Views: 1642

Re: AAMC Psych/Soc Section Bank #9

There is no reasoning involved in this, that is the design of the IQ scale and a discrete bit of information you are expected to know. The WISC IQ scale and the million slightly different names it goes under ("IQ score" vs "WISC Full Scale Score") is a scale where 100 represents the median, and ever...
by NS_Tutor_Mathias
Sun May 10, 2020 4:10 pm
Forum: AAMC Resources
Topic: B/B Section Bank Part 1
Replies: 1
Views: 1714

Re: B/B Section Bank Part 1

Hey there! Definitely do not let the section bank discourage you, this is some of the hardest stuff the MCAT has to offer. 6. This is an organic chemistry fundamentals question. Nucleophilic attack by the oxygen of serine on phosphate results in the formation of phoshporylated serine. Only tyrosine,...
by NS_Tutor_Mathias
Fri May 08, 2020 8:16 pm
Forum: Post your questions here about any videos in the class
Topic: Le Chatelier's Principle
Replies: 3
Views: 1671

Re: Le Chatelier's Principle

Pretty much. The more acid I add, the less likely future acids are to dissociate.
by NS_Tutor_Mathias
Fri May 08, 2020 8:14 pm
Forum: General Discussion & FAQ
Topic: Calculating Total Electrons
Replies: 3
Views: 1389

Re: Calculating Total Electrons

That will give you all the valence electrons. Which for hydrogen is all the electrons, period. For oxygen and carbon however, they still have a non-valence shell at n = 1, namely two electrons in the singular s orbital at that energy level.
by NS_Tutor_Mathias
Fri May 08, 2020 4:25 am
Forum: AAMC Resources
Topic: AAMC Sample Test - Chem/Phys Section
Replies: 1
Views: 1145

Re: AAMC Sample Test - Chem/Phys Section

38 I will do later, let me plug a tablet in to more easily make a drawing for you :) 11: You kind of answered this yourself. Dissolution is not the same as dissociation. Solid sucrose dissolves in water. It does not however dissociate quite as easily. Same here: The protons of this weak acid did not...