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So you’ve finished taking your first practice MCAT exam, and you’re excited to sit down and review it. You cover the science sections first, carefully writing down the concepts you need to revisit and the traps you fell for. Now,…
A 2 L sealed vessel contains 2 moles of nitrogen gas at 0oC. All of the following will decrease the pressure inside the vessel EXCEPT: nitrogen leaking out of the tank decreasing the temperature of the gas expanding the volume…
Thin-layer chromatography (TLC) is a laboratory technique used to separate non-volatile mixtures. Using a silica gel plate and a hexane solvent, which of the following compounds in a mixture containing CH3OH, HCOOH, CH2O, and C6H6 would have the highest Rf…
Myoclonic epilepsy and ragged-red fiber (MERRF) is an extremely rare disorder that affects neuromuscular systems. MERRF results from a mutation in mitochondrial DNA (mtDNA) that impairs protein synthesis, oxygen consumption, and energy production. When an affected male and a normal…
The combustion of glucose, a six-carbon sugar, is represented by the following balanced reaction: C6H12O6 + 6 O2 → 6 CO2 + 6 H2O If a reaction vessel initially contains 360 grams of C6H12O6 (MW = 180 g/mole), and if the…
A beam of light is traveling through air (n = 1) when it passes through a transparent glass (n = 1.5) medium. Which of following is true concerning the angles θ and the velocity V? A. θ1 > θ2 and…
A person suffering from severe dehydration and starvation would NOT be expected to have elevated plasma concentrations for which of the following hormones? A. ADH B. Cortisol C. Aldosterone D. Insulin Click for Explanation This question asks you to determine…
Mg(OH)2 is slowly dissolved in 500 mL of 25oC water until the solution becomes fully saturated. Which of the following occurs when 10.0 mL of 0.1 M HCl is added? A. MgCl2 precipitates B. Mg(OH)2 precipitates C. Ksp for Mg(OH)2…
In which of the following structures of a healthy human male would immotile sperm incapable of fertilization be found? Vas deferens Seminiferous tubules Urethra A. I only B. II only C. I and II D. I, II, and III Click…
The molar heat capacities (J/mole K) for zinc, copper, silver, and gold is 25.2, 24.5, 24.9, and 25.6, respectively. If 1 mole of each substance is heated until the temperature increases by 10K, which metal required the addition of the…