Two Solutions, 50

question 42

Multiple Choice

Two solutions, 50.0 mL of 1.00 M BaCl₂(aq) and 50.0 mL of 1.00 M Na₂SO₄(aq) , both initially at 21.5°C, are added to a calorimeter with a total heat capacity, after the solutions are added, of 1.10 kJ/°C and the temperature rises to 22.7°C. Determine qrxn per mole of BaSO₄(s) formed in the reaction.

• A) -26.4 kJ/mol
• B) +26.4 kJ/mol
• C) -2.64 kJ/mol
• D) +2.64 kJ/mol

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Definitions:

Classic Experiment

A traditional or well-established experimental procedure used in scientific research to test hypotheses.

Latent Learning

Learning that occurs without immediate reinforcement and is not demonstrated until there is an incentive to perform.

Operant Conditioning

A system of conditioning that impacts the strength of behaviors through positive reinforcements or negative consequences.

Observational Learning

The process by which an individual learns by observing the actions and outcomes of others' behaviors.