A Solution Is Prepared by Adding 40

question 23

Multiple Choice

A solution is prepared by adding 40.3 g of Mg(NO₃) ₂ to 127 g of water. Calculate the mole fraction and molality of magnesium nitrate in this solution.

• A) Mole fraction = 0.0371; molality = 2.14 m
• B) Mole fraction = 0.0571; molality = 2.14 m
• C) Mole fraction = 0.0371; molality = 1.14 m
• D) Mole fraction = 0.0571; molality = 1.14 m
• E) None of the above

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Definitions:

Conditioned Stimulus

A formerly neutral stimulus that, following its pairing with an unconditioned stimulus, ends up provoking a conditioned response.

Unconditioned Response

A natural, automatic reaction to a stimulus that occurs without prior learning or conditioning.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with an unconditioned stimulus, is able to elicit a conditioned response on its own.

Conditioned Response

A learned reaction to a conditioned stimulus that occurs because of previous conditioning.