MCAT Chemistry Question – Combustion of Octane
The combustion of octane is a common reaction in automobile engines. 1) 2 C8H18 (l) + 25 O2 (g) → 16 CO2 (g) + 18 H2O (g) ΔH1 = -250 kJ/mole 2) 18 H2O (l) → 18 H2O (g) ΔH2 = 88…
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Read MoreMCAT Chemistry Question – Combustion of Octane
MCAT Biology Question – Sex Chromosomes
In the ZW sex-determination system for birds, males (ZZ) are the homogametic sex while females (ZW) are the heterogametic sex. What is the most likely regulatory mechanism for the potential imbalance in gene expression between male and female birds? A. …
MCAT Physics Problem
The voltage drop across Rd is 8 V. What is the current across Re? A. 2 A B. 8 A C. 14 A D. 32 A Click for Explanation This problem requires 3 electrical circuit concepts: 1) V = IR,…
MCAT Organic Chemistry Question — Alcohol Reactions
Considering all “-R” groups to be alkyl groups, which alcohol is most reactive in an SN1 reaction with HCl? a) primary alcohol b) secondary alcohol c) tertiary alcohol d) number of substituent groups does not affect alcohol reactivity
MCAT Biology Question — Carbon Reactions
In the Felkin model, a carbon which is originally achiral can undergo a reaction to generate a single enantiomer with 98% yield (with the remaining 2% generating the opposite enantiomer). This type of reaction is best described as: A) Chiral…
MCAT Biology – Germ Layers
The lining of the digestive tract and the respiratory tract develops from which germ layer? I. Endoderm II. Mesoderm III. Ectoderm a) I only b) II only c) III only d) I and II
MCAT Physics – Light Behavior
A ray of light traveling through air hits a pane of glass with known refractive index. What information is required in order to calculate the angle of refraction? a) Planck’s constant and the speed of light b) the specific gravity…
MCAT Physics – Doppler Effect
Radar guns used to detect the speed of motorists relies on the principles of sound and Doppler effect. All of the following measurements may be utilized to calculate the relative velocity of a motor vehicle EXCEPT: A. Speed of sound…
MCAT Psychology – Correlation
In the course of gathering data in an experiment, a researcher develops the following correlation matrix: Table 1 Correlation Matrix Which of the following pairs of variables are most strongly correlated? A) A, C B) A, D C) B, D…
MCAT Physics – Sound Wave Behavior
A source emits a sound from one medium with a certain velocity, intensity, frequency and wavelength. When the sound exits the first medium and enters a denser medium, all of the following changes EXCEPT: A. velocity B. intensity C. frequency…