NS FL 2 Passage 3, Q 11
Hi, Can someone explain why the answer is D and not C? The graph on Figure 2 shows that with analogs (which I assume would act just like the substrate), seem to show neutral (and better than no analog)...
View ArticleEpoxides
Can someone explain which way the epoxide breaks? I've been stuck on it for a while now. Also, does the Nuc- attack the more substituted side or less substituted side?
View ArticleTranslational Motion Passage & A few of the questions
I'm really struggling with my Physics review. Physics is by far my weakest link in the pre-med reqs. I took Physics I ~4-5 years ago, and took Physics II about 1.5 years ago. Getting a B and A...
View Articlerate constant
I understand that according to the Arrhenius equation, k = A (e^-x/T), where x = Ea/R, when you increase T, the exponential term just becomes larger, so the rate constant increases, and this is true...
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C NMR
What do the letters mean above each one? I'm assuming they mean doublet, singlet, triplet but I don't see how that makes much sense in a C NMR.
View ArticleCARS question?
I have a question on page 382-383 of the CARS part of the lesson book from Kaplan (I also posted this on the Kaplan forum before I realized that this would be the better forum, so sorry about that): In...
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Acids/Bases and Nucleophiles/Electrophiles
What's the best way to go about solving these types of problems? I constantly find myself struggling to tell which ones are the strongest/weakest nucleophiles.
View ArticleTest taking lessons from football
Just wanted to share this post I found from another page. Take a break from MCAT stuff and give it a read. I found it quite refreshing haha....
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Acidity to Reactivity
I know the answer to this one is A. Is acidity inversely related to acidity. Since acids are the stable, I am assuming that weak acids will react faster. Is this logic correct? So reactivity would go...
View ArticleDoes anyone know why Mg2+ can't be further oxidized?
This is in reference to a question in BR, which asks "Which of the following species is the strongest reducing agent? A. Cl2 B. Cu C. Mg2+ D. Zn" The answer is Zn. I would have thought Mg2+, because if...
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Acetylation
I am curious why acetylation only occurs on the amino group and not on the alcohol group too. =
View ArticleWhy Vasoconstrict at hemorrhage? Q 54 Q pack Biology V1
I understand that vasoconstriction causes radius to decrease, thus resistance to increase, and thus increase in blood pressure (as described by Poisseulle's law) but why would you want to vasoconstrict...
View ArticleCovalent vs Ionic - Lithium Iodide
So the following reaction takes place LiI + BaS --> no reaction I would have thought LiI dissociates into Lithium and iodide ions and thus would undergo a double displacement reaction, but no. What...
View ArticleEmpirical formula
A compound contains only carbon, hydrogen, and oxygen. Oxygen is found to be 52.9% and carbon is found to be 19.8% by mass. What is the empirical formula of the compound if 0.058 moles of the acid...
View ArticleQuestion about Antenna and electromagnetic radiation
Hi all, Good afternoon! I was reading one of the passage from Sterling Test Prep 2016 today and a few of the questions from the passage really confused me. Passage 7: Radio waves carry information by...
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Physics Conservation of Energy Question
How would you go about answering this question? I have looked at the key, but there are parts of it that I am confused about. For instance: At the top of the loop, we must derive another formula to...
View ArticleNa+/K+ ATPase question
The wording of the correct answer choice to the following question is confusing to me: Na+K+ ATPase is found in epithelial cells that produce urine or other excretions that are hypertonic relative to...
View ArticleChange in Blood Vessel radius
Can someone please help me with this question? (Using Poiseuille's Law) Suppose a blood vessel's radius is decreased to 90.0% of its original value by plaque deposits and the body compensates by...
View ArticleHypocalcemia / neural membrane potential
Which of the following observations would best explain the convulsions induced by hypocalcemia? 1) Hypocalcemia increases parathyroid hormone secretion 2) Decreased plasma calcium levels increase...
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