Ch.6 - Thermochemistry WorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: A copper cube with an edge measuring 1.57 cm and an aluminum cube with an edge measuring 1.66 cm are both heated to 57.6 oC and submerged in 100.0 mL of water at 21.9 oC.What is the final temperature

Solution: A copper cube with an edge measuring 1.57 cm and an aluminum cube with an edge measuring 1.66 cm are both heated to 57.6 oC and submerged in 100.0 mL of water at 21.9 oC.What is the final temperature

Problem

A copper cube with an edge measuring 1.57 cm and an aluminum cube with an edge measuring 1.66 cm are both heated to 57.6 oC and submerged in 100.0 mL of water at 21.9 oC.

What is the final temperature of the water when equilibrium is reached? (Assume a density of 0.998 g/mL for water.) 

Solution

Concept: Calorimetry with Thermal Equilibrium

What we will need:

• Density of Copper = 8.96 g/cm3             

• Density of Aluminum = 2.7 g/cm3

• Density of water = 0.998 g/mL  (given)

We also need to find masses of both metals and water. To do that we will use density and volume of each.

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