Below Is a Diagram Representing a Solvent A(l) in a 1-L

question 38

Multiple Choice

Below is a diagram representing a solvent A(l) in a 1-L beaker, and a solute X dissolved in the solvent. Solvent A has a density of 0.8 g/mL, and a molar mass of 40 g/mol. Solute X has a molar mass of 30 g/mol. Each circle of X represents 1 mol of X. Assume that the solute addition does not significantly change the volume of liquid in the beaker. What is the molality of the solute X in this solution?

• A) 2 m
• B) 4 m
• C) 5 m
• D) 0.004 m
• E) 0.005 m

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Definitions:

Stage Perspective

A viewpoint in developmental psychology that suggests individuals progress through a series of discrete stages of cognitive or emotional development.

Stage Theory of Development

A theory that proposes human development happens in distinct stages, each characterized by specific cognitive, social, or moral developments.

Predictable Order

A sequence of events or stages that occur in a consistent and known pattern, allowing for anticipation of what comes next.

Sensitive Periods

Critically defined periods in early development when the individual is especially receptive to certain stimuli and learning experiences.