When 500 ML of 0

question 123

Multiple Choice

When 50.0 mL of 0.400 mol L^-1 Ca(NO₃) ₂ is added to 50.0 mL of 0.800 mol L^-1 NaF, CaF₂ precipitates, as shown in the net ionic equation below. The initial temperature of both solutions is 24.0 °C. Assuming that the reaction goes to completion, and that the resulting solution has a mass of 100.00 g and a specific heat of 4.18 J , calculate the final temperature of the solution. Ca²⁺(aq) + 2F^-(aq) → CaF₂(s) H = -11.5 kJ

• A) 23.45 °C
• B) 24.55 °C
• C) 25.10 °C
• D) 25.65 °C

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Definitions:

Forgetting Curves

Graphical representations that show how the ability to retain information decreases over time without rehearsal or practice.

Long-Term Memory

A durable and virtually limitless storage system in the brain for retaining information over long durations, including facts, experiences, and skills.

Mnemonic Device

A technique used to improve memory by associating complex information with simple, easily recallable aids like patterns, phrases, or images.

Peg-Word Method

A mnemonic strategy that involves linking numbers with items that rhyme with or resemble the numbers to remember a list of items.