Finding Equilibrium [C] from initial [C] Question Confusion
Consider the reaction for the decomposition of hydrogen disulfide: 2 H2S(g) ⇌2 H2(g) + S2(g) Kc = 1.67 e-7 at 800°C The initial concentrations are [H2S] = 0.100M, [H2] = 0.100M and [S2] = 0.00M. Find...
View ArticleEK #792 Acid/Base Question
Which of the following influences the pH of an aqueous solution of a weak base? The answer was the concentration of the base and the pKb of the base However, another option said volume of the solution....
View ArticleRight hand rule/ Left hand rule (Solved)
Hi, I'm confused when to use the right hand rule and when to use the left hand rule. I thought when the directions of current and magnetic field are given, we always use the left hand rule to find the...
View ArticleTPR Physics WB Passage 44 Question 4
Its an optics passage, so I'll do must best to make a diagram here. Mirror M....................................................Partial Mirror P (slanted)...
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Attention/graph question
The following question about attention from khan academy got me confused. Question: Figure 1: Error bars show standard error of sample mean. Conditions 4 and 9 squares displayed were significant at p...
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D-Threose Naming
Kaplan says "all D-sugars have the hydroxide of their highest numbered chiral center on the right." On the next page Kaplan presents L- and D-threose. The OH of the highest numbered chiral center is...
View ArticleFluid Pressure & Fluid Velocity Confusion
I seem to be a little confused with the correlation between fluid pressure and fluid velocity and was hoping someone could explain this to me. In Bernoulli's equation, we see that the pressure...
View ArticleKaplan Science Assessment Physics Q3
A projectile of mass 20 kg is shot at an angle of 60 degrees to the horizontal at a speed of 100 m/s. What is the energy of the projectile at its highest point? Answer: 1 x 10^5 J They explain the...
View ArticleP/S Section Bank Questions
Hello, As you may know, the explanations in the AAMC questions suck. So if people want to use this thread for answering P/S section bank related questions that would be great! I would be thankful if...
View ArticleTBR G.Chem (Gases) weirdly worded question
Hi! I was doing passage 13 from TBR's gases section (Ch. 6) and I wasn't sure if they made a mistake or I'm misunderstanding the question. My logic for the question is fine it's just the wording. "In...
View ArticleBR Physics Chapter 6, Phase II Question 3
This question has bothered a few people, so I want to address a few things. This question is not about your knowledge of Tc, although if you happen to have experience in medical imaging it may seem...
View ArticleClearing up confusion on Resistors and Current in Parallel Circuits
Adding a resistor in parallel decreases the overall Resistance and increases the total Current of the circuit. However, where do all these extra charge come from? I know the battery provides the...
View ArticleDoes intramolecular hydrogen bonding influence effective polarity of compound...
Hi! Confused about #21 EK FL2 C/P - Does intramolecular hydrogen bonding affect the polarity of a total molecule? In the problem, there are two compounds. Compound 1 has a hydroxyl and carbonyl oxygen...
View ArticleEK Biology. Question on DNA replication
5-bromouracil resembles thymine enough to become incorporated into DNA during replication. Once incorporated, however, it rearranges to resemble cytosine. If 5-bromouracil were present during the...
View ArticleFructose - beta - sucrose
http://wpage.unina.it/petrilli/gifs/sucrose.gif In the picture, fructose has a beta position, even though it is "down." Why is that? Thank you, ahead.
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ExamKrackers FL3, #1 and 3, very confused
Does anyone know how this question works out? I'm having trouble understanding what the table means. I was thinking it either means the ratio of correct:incorrect, but it seems to me that it would...
View ArticleSympath & Parasymp: vasodilation/vasoconstriction
sorry for the long title. So parasympathetic and sympathetic activity have different effects in different systems. I was wondering what happens to the vasoconstriction/vasodilation in these systems:...
View ArticleAAMC test BS #21
Could some explain how the structure of STN makes it hydrophobic and easy to pass through the membrane? I thought it would be hydrophilic due to the hydrogens/nitrogens/carbonyls.. Is it due to all of...
View ArticleKaplan Physics Practice Question
A consumer is comparing two new cars. Car A exerts 250 horsepower, while Car B exerts 300 horsepower. The consumer is most concerned about the peak velocity that the car can reach. Which of the...
View ArticleComplicated Kinematics Problem
A baseball is thrown vertically with a speed of 3m/s. Find the total time the ball has been in flight when it has traveled 50cm. I got stuck halfway. Could someone just assist me on what equations to...
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