The Density of a 20

question 39

Multiple Choice

The density of a 20.3 M CH₃OH (methanol) solution is 0.858 g/mL. What is the molality of this solution? H₂O is the solvent.

• A) 17.4 m
• B) 20.8 m
• C) 23.7 m
• D) 70.0 m
• E) 97.8 m

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Definitions:

Perceptual Scaffolding

The way in which a familiar word serves as an anchor for learning new words that come immediately before or after it.

Syntactic Bootstrapping

Use of knowledge of grammar to figure out the meaning of new words.

Fast Mapping

The way in which children quickly form an idea of the meaning of an unfamiliar word they hear in a familiar and highly structured social interaction.

Babbling

Early stage of language development where infants produce sounds or syllables repeatedly without specific meaning.