Fall 2024 Final Exam Re-take

Front

What type of intermolecular force is hydrogen bonding?

Back

Hydrogen bonding is a unique case of dipole-dipole intermolecular force.

Front

What is the equivalent volume in Liters for 355 milliliters?

Back

0.355 L

Front

What type of reaction occurs when a cold compress is activated?

Back

The reaction is endothermic.

Front

What does the mass of one mole of an element equal?

Back

It equals its atomic mass from the periodic table, but in grams.

Front

Which of the following is an empirical formula: CH₃COOH, C₆H₁₂O₆, or H₂O?

Back

H₂O is considered an empirical formula.

Front

Define hydrogen bonding.

Back

Hydrogen bonding is a strong type of dipole-dipole attraction that occurs between molecules when hydrogen is bonded to highly electronegative atoms like nitrogen, oxygen, or fluorine.

Front

What is the formula to convert milliliters to liters?

Back

To convert milliliters to liters, divide the number of milliliters by 1000.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is the difference between empirical and molecular formulas?

Back

An empirical formula shows the simplest whole-number ratio of elements in a compound, while a molecular formula shows the actual number of atoms of each element in a molecule.