Socrates Was Killed by a Dose of Hemlock, Which Is

question 96

Multiple Choice

Socrates was killed by a dose of hemlock, which is a poisonous herb in the carrot family. In a combustion experiment, 50.05 mg of the poisonous compound in hemlock was burned in excess oxygen to give 140.8 mg of CO₂ and 54.2 mg of H₂O. In a second experiment, it was determined that the compound is composed of only carbon, hydrogen, and nitrogen and has a molar mass less than 200 g/mol. What is the molecular formula of the poisonous compound in hemlock? Respond with the sum of the C, N, and H atoms in this compound. For example, if the molecular formula were CNH₂, you would respond 4.

• A) 18
• B) 12
• C) 24
• D) 36
• E) 30

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Definitions:

Area

A quantification of the size of a 2D shape or surface, represented in units squared.

Standard Normal Curve

The standard normal curve is a type of normal curve with a mean of 0 and a standard deviation of 1, used as a reference in probability and statistics.

Probability

A measure of the likelihood that an event will occur, expressed as a number between 0 and 1 where 0 indicates impossibility and 1 indicates certainty.

Z

A statistical measure used in the context of standard deviations to describe the position of a raw score in relation to the mean of a group of scores.