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Whether you’re just beginning to prepare for the MCAT, already immersed in studying, or considering a retake, you’ve probably questioned what CARS strategy would work best for you. While there are quite a few ways to approach a CARS passage,…
What are the formal charges on oxygen A, carbon, and oxygen B in this resonance structure of CO2? A. -1, 0, -3 B. +2, 0, +2 C. +1, 0, -1 D. +5, +4, +7 Click for Explanation Formal charge =…
The fundamental wavelength of a standing wave in a 1 meter long pipe, if the pipe has one open end and one closed end is: A. 4m B. 1m C. 2m D. 4/3m Click for Explanation Standing waves consist of…
One mole of a compound consists of approximately 72g carbon and 6g hydrogen. What is its empirical formula? A. C6H6 B. CHO C. CH D. C6H12 Click for Explanation The empirical formula expresses the smallest number of atoms making up…
A 10-cubic-cm cork floats in water with 1/2 of its volume submerged. Approximately what fraction of the cork’s volume will be submerged when in mercury (specific gravity = 13)? A. 1/20 B. 1/2 C. The cork will completely submerge because…
When preparing for the MCAT, it’s important to identify topics that cut across content areas, because conceptual intersections between fields are (1) relatively likely to be high-yield topics and (2) help you integrate the material in a way that will…
Sodium nitrate and ammonium sulfate react at 230ºC to yield sodium sulfate, nitrous oxide, and water vapor. If the total pressure of the products is 1.8 atm, what is the partial pressure of the nitrous oxide? The reaction is as…
Prior to vaccinations for poliomyelitis, widespread polio infection created wards of patients at risk of death due to loss of control of respiratory muscles. In 1928, Drinker and Shaw invented the first “iron lung,” a device that sealed the patient’s…
Ions X, Y, and Z are initially held fixed in the orientation shown below: Which of the following vectors corresponds to the direction ion Z will move immediately after it is released from its fixed position? Click for Explanation Ion…
A holding tank at sea level (atmospheric pressure 1.01 x 105 Pa) containing water has a pressure of 2 x 105 Pa at 10 m depth. What is the pressure in an equivalent holding tank containing mercury (specific gravity =…