Final Exam (1b, 2b, 3b) Review -- Dec. 2024

Front

How many oxygen atoms are in Mg(NO₃)₂?

Back

6

Front

What is the second strongest intermolecular force after hydrogen bonding?

Back

Dipole-dipole attraction

Front

How many moles of water (H₂O) can form from 5.00 moles of hydrogen (H₂) with excess oxygen (O₂)?

Back

5.00 moles

Front

In the reaction HCO₃⁻ + H₂O ↔ CO₃²⁻ + H₃O⁺, what is the role of HCO₃⁻?

Back

Acid

Front

Complete the reaction: PCl₅ + ___ H₂O → ___ HCl + H₃PO₄.

Back

4, 5

Front

What is the formula for calculating moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol)

Front

Define hydrogen bonding.

Back

A strong type of dipole-dipole attraction between molecules that have hydrogen bonded to a highly electronegative atom.

Front

What is the molar mass of water (H₂O)?

Back

18.02 g/mol

Front

What is the difference between an acid and a base?

Back

Acids donate protons (H⁺), while bases accept protons.

Front

What is the formula for calculating the number of molecules from moles?

Back

Number of molecules = Moles × Avogadro's number (6.022 × 10²³)