Calculate the Molality of a Solution That Is Prepared by Mixing

question 12

Multiple Choice

Calculate the molality of a solution that is prepared by mixing 25.5 mL of CH₃OH (d = 0.792 g mL^-1) and 387 mL of CH₃CH₂CH₂OH (d = 0.811 g mL^-1) .

• A) 0.630 mol kg^-1
• B) 0.812 mol kg^-1
• C) 1.57 mol kg^-1
• D) 2.01 mol kg^-1
• E) 4.98 mol kg^-1

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Definitions:

Recall

The mental process of retrieving information from memory without the aid of cues, often tested as a memory function.

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Without method or conscious decision, in a way that seems unpredictable or without pattern.

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A cognitive bias where people decide on options based on whether they are presented in a positive or negative way.

Risky Strategy

In decision making, opting for an option with potentially higher rewards but also higher risks, often contrasted with a safe or conservative approach.