A 500-G Sample of a Material at 80

question 63

Multiple Choice

A 50.0-g sample of a material at 80.0°C is dropped into a calorimeter containing 100.0 g of water at 20.0°C. When the mixture reaches thermal equilibrium, it is at a temperature 24.0°C. If heat transfer to the walls of the calorimeter is negligible, what is the specific heat of the material?

• A)0.143 cal/(g∙C°)
• B)0.322 cal/(g∙C°)
• C)0.221 cal/(g∙C°)
• D)0.437 cal/(g∙C°)
• E)0.0714 cal/(g∙C°)

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Definitions:

Chemical Modification

The alteration of a chemical compound's structure through the addition, removal, or exchange of atoms or functional groups.

Protein Degradation

The breakdown of proteins into amino acids or smaller peptides, a crucial process for cellular regulation and the removal of damaged or unnecessary proteins.

Genomic Imprinting

An epigenetic phenomenon by which certain genes are expressed in a parent-of-origin-specific manner.

Epigenetics

The study of heritable changes in gene expression that do not involve changes to the DNA sequence.