Tag Archives: MCAT

String Cheese Theory

A hollow rubber ball, whose volume is 3 x 10-3m3 and has a mass of 1.0 kg) is held by a 1-meter-long string attached to the bottom of a large container of water. What is the tension in the string?

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Pick Your Poison

Naturally occurring tartaric acid is found in the levo (L-) form (pictured below). If given a sample of optically pure tartaric acid of unknown isomeric form, which laboratory instrument or technique would you use to determine its identity?

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Horse Race

A horse accelerates uniformly from 0 to 20 mi/h in 2 seconds. What is the acceleration?

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Shake and Bake

A racecar travels in a circular path around the Daytona 500 track. The radius of the circular track is doubled and the speed of the car does not change. The required force to maintain the car’s motion is:

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Switch Hitter

Which one of the following molecule is amphipathic, with both a hydrophilic and hydrophobic region?

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Buffer Buffoon

A student creates a 1M citrate (C3H5O(COO)33-) buffer solution at pH 5.0. He then dilutes the solution to 200 mM, and adds it to his experiment. What is the pH of the 200 mM buffer solution?

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The pH Value Is Right

Which set of 1 Molar solutions has the correct pH values?

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Getting Torqued

Water moves through a turbine in a dam, causing it to turn. The force of the water is 300 N, and the radius of the wheel is 20 m. What is the torque around the center of the wheel?

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Phase Changes

Which opposite Phase Changes occur at the same temperature for a pure substance?

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Endpoint of a Titration

Which of the following is NOT needed to calculate the endpoint of a titration?

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