When a Certain Acid and a Certain Base Are Mixed

question 10

Multiple Choice

When a certain acid and a certain base are mixed together, a reaction occurs that produces a gas as one of the products. The gas has a density of 2.62 g/L at 1.47 atm and 27°C. What is the molar mass and identity of the gas?

• A) H₂, 2 g/mol
• B) CO, 28 g/mol
• C) O₂, 32 g/mol
• D) CO₂, 44 g/mol
• E) SO₂, 64 g/mol

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Definitions:

Core Knowledge Researchers

Scientists and psychologists focused on understanding how humans, especially infants, develop core domains of understanding about the world, such as physics, biology, and psychology.

Core Knowledge Theorist

A theorist who posits that humans are born with innate, domain-specific knowledge systems, such as for language and physics.

Violation-of-expectation

A research method used in developmental psychology to study infants' understanding of the world by observing their reactions to events that contradict their expectations.

Tertiary Circular Reactions

A cognitive developmental stage in infants described by Piaget, involving the purposeful adaptation of established schemes to new situations.