If 100 L of an Unknown Gas at STP Has a a Mass

question 64

Multiple Choice

If 1.00 L of an unknown gas at STP has a mass of 5.40 g,what is its molar mass?

• A)4.15 g/mol
• B)5.40 g/mol
• C)22.4 g/mol
• D)54.0 g/mol
• E)121 g/mol

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Definitions:

Formal Operational

The final stage in Piaget's theory of cognitive development, characterized by the ability to think abstractly, logically, and to carry out systematic planning.

Concept of Conservation

A cognitive ability in child development whereby the child learns that quantity or amount does not change despite a change in the form or arrangement of objects.

Object Permanence

The understanding that objects continue to exist even when they cannot be observed or heard, a concept developed during early childhood.

Abstract Reasoning

The ability to analyze information, detect patterns and relationships, and solve problems on a complex, abstract level.