When 200 Grams of an Unknown Compound Are Dissolved in 500

question 41

Short Answer

When 20.0 grams of an unknown compound are dissolved in 500.grams of benzene, the freezing point of the resulting solution is 3.77°C.The freezing point of pure benzene is 5.444°C, and the K_f for benzene is 5.12°C/m.What is the molar mass of the unknown compound?

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Definitions:

Variable-Ratio

A reinforcement pattern in which a reaction is rewarded following a random number of responses, resulting in consistent and elevated rates of response.

Fixed-Ratio

A reinforcement schedule where a response is reinforced only after a specified number of responses have occurred.

Fixed-Interval

A reinforcement schedule in which the first reaction is reinforced after a predetermined period, resulting in a patterned series of responses.

Variable-Interval

A schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed.