question The reaction of an alcohol with a carboxylic acid in the presence of an acid catalyst is known as

The Lewis structure for a nitrogen trifluoride (NF3) molecule shows:

A. One single bond and two double bonds
B. One single bond and two triple bonds
C. Three single bonds
D. One double bond and two single bonds

What is the primary function of DNA ligase in DNA replication?

A. Joining Okazaki fragments on the lagging strand
B. Unwinding the DNA double helix
C. Synthesizing a new DNA strand
D. Proofreading DNA for errors

What is the term for a bond formed by the sharing of electrons with a significant difference in electronegativity?

A. Polar covalent
B. Nonpolar covalent
C. Ionic
D. Metallic

The Clausius-Clapeyron equation describes the relationship between vapor pressure and:

A. Temperature
B. Volume
C. Pressure
D. Entropy

What is the standard entropy change (ΔS°) for a pure crystalline substance at absolute zero?

A. 0 J/(mol·K)
B. 1 J/(mol·K)
C. -1 J/(mol·K)
D. Depends on the substance

The term "nuclear shell model" explains the stability of nuclei based on:

A. Shell structure of electrons
B. Orbitals of electrons
C. Sublevels of electrons
D. Energy levels of electrons

What is the IUPAC name for CH₃CH₂CH₂NH₂?

A. Ethylamine
B. Propylamine
C. Butylamine
D. Ethylmethanamine

What is the term for the process by which mRNA is decoded to produce a specific sequence of amino acids during protein synthesis?

A. Translation
B. Transcription
C. Replication
D. Transformation

An isothermal process occurs when the:

A. Temperature remains constant
B. Pressure remains constant
C. Volume remains constant
D. Internal energy remains constant

Which analytical technique involves passing an electric current through a solution to determine the concentration of an analyte?

A. Electrochemical methods
B. Spectroscopy
C. Chromatography
D. Titration