Calcium Oxide and Water React in an Exothermic Reaction: CaO(s) $\rarr$

question 102

Multiple Choice

Calcium oxide and water react in an exothermic reaction: CaO(s) + H₂O(l) $\rarr$ Ca(OH) ₂(s) , $\Delta$ H°_rxn = -64.8 kJ/mol
How much heat would be liberated when 7.15 g CaO(s) is dropped into a beaker containing 152g H₂O?

• A)1.97 × 10^-3 kJ
• B)8.26 kJ
• C)508 kJ
• D)547 kJ
• E)555 kJ

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Definitions:

Cross-sectional Research

A research method that involves analyzing data from a population, or a representative subset, at a specific point in time to identify patterns and correlations.

Age Ranges

The division of human life into distinct and often socially recognized periods, typically categorized by developmental stages.

Independent Variable

In experimental research, the variable that is manipulated or changed to observe its effect on the dependent variable.

Memorizing

The act of committing information to memory for later retrieval.