The pressure above a solid compound is slowly reduced. Which of the following is true? A. If the substance is H2O, it will transition from solid directly into gas. B. For all substances except H2O, the substance will transition into liquid…
The flow of blood through the aorta can be approximated with the volumetric flow rate equation. When the smooth muscle of the aorta contracts, the radius can decrease by as much as 10%. If the blood flow is to remain…
All of the following are true regarding the function of neurons EXCEPT: A. Hyperpolarization at the end of an action potential is one mechanism by which neurons limit the rate at which action potentials may fire. B. The flow of…
Types of Study Design on the MCAT The Psychology and Sociology section of the MCAT has become well-known for including questions about experimental design. Moreover, experimentally-based passages occur in all three science sections. For this reason, gaining a solid…
If you’re preparing for the MCAT, you’ve probably experienced this scenario before: you’re reviewing a practice exam or question set that you’ve completed, and you see a math-based question that you missed. While reading the explanation, you kick yourself, thinking…
What is the most common electron configuration for Chromium (Cr)? A. [Ne] 4s23d4 B. [Ar] 4s23d4 C. [Ar] 4s13d5 D. [Ne] 3d Click for Explanation [Ne] indicates filled 2s and 2p orbitals, which is incorrect for chromium. [Ar] correctly indicates…
If the pressure difference measured at two depths of a tank of mercury is 130,000 Pa, what is the height difference between the two depths? (Use specific gravity of mercury = 13 and gravity = 10m/sec2) A. 10cm B. 1m…
Which of the materials in table 1 has the lowest density? Material Volume (cm3) Mass (g) ice 2 1.86 mercury 4 21.6 iron 6 47.4 methanol 10 7.9 A. ice B. mercury C. iron D. methanol Click for Explanation Density…
Solid Fe(OH)3 is added to distilled water and allowed to reach equilibrium. At that time, [Fe3+]aq= 4 x 10-10 M. Calculate the Ksp of Fe(OH)3. A. 4 x 10-10 B. 4.8 x 10-19 C. 6.9 x 10-37 D. cannot be determined…
A protic acid is being titrated with sodium hydroxide (NaOH) when the pH of the solution stays relatively constant across a significant concentration range of the NaOH. This region of the titration curve includes which of the following: A. the…