Lithium and Nitrogen React in a Combination Reaction to Produce

question 52

Multiple Choice

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N₂ (g) → 2Li₃N (s)
In a particular experiment, 5.50-g samples of each reagent are reacted. The theoretical yield of lithium nitride is __________ g.

• A)5.53
• B)4.60
• C)27.6
• D)9.20
• E)13.7

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Definitions:

Formal Operational

A stage in Piaget's theory of cognitive development where individuals gain the ability to think abstractly, systematically, and logically.

Object Permanence

The understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed, a concept typically developed during infancy.

Sensorimotor Substage

A phase in Piaget's theory of cognitive development, where infants learn through interacting with the world via their senses and actions.

Secondary Circular Reactions

Part of Piaget's theory of cognitive development, these are repetitive actions in infants aged 4-8 months that reflect the infant's discovery of actions and their effects on the environment.