A 300 Mg Sample of Caffeine Was Dissolved in 10

question 37

Multiple Choice

A 300 mg sample of caffeine was dissolved in 10.0 g of camphor (K_f = 39.7°C/m) , decreasing the freezing point of camphor by 3.07°C. What is the molar mass of caffeine?

• A) 47.0 g/mol
• B) 194 g/mol
• C) 388 g/mol
• D) 94.0 g/mol
• E) 97.0 g/mol

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Definitions:

C-frame Motors

Motors characterized by their C-shaped frame, typically used in specific applications where space and mounting are considerations.

Very Low Torque

Refers to a condition or capacity of generating minimal rotational force, often insufficient for overcoming system inertia.

Mechanical Load

The force or stresses applied to a system or component, usually resulting from mechanical devices or systems.

Coupling Device

A mechanical or electromagnetic component used to connect two shafts together at their ends for the purpose of transmitting power.