What Is the Mole Fraction of Lactose in a Mixture

question 22

Multiple Choice

What is the mole fraction of lactose in a mixture prepared by adding 15.0 g of lactose (C₁₂H₂₂O₁₁) to 100.0 g of water?

• A) c _lactose = 7.83×10 ^{- 3}
• B) c _lactose = 7.89×10 ^{- 3}
• C) c _lactose = 0.130
• D) c _lactose = 0.150
• E) c _lactose = 0.992

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Definitions:

Ethnomethodological

Relates to a sociological method that studies the ways people make sense of their everyday lives.

Conversational Analysis

A methodology in sociolinguistics and sociology that studies the structure and patterns of conversation to understand social interactions.

Positive Responses

Positive Responses are affirmative reactions or feedback to stimuli, interactions, or situations, suggesting agreement, approval, or pleasure.

Ethnomethodological

Pertaining to the study of the methods people use in everyday life to create a sense of social order and understand their world.