⚖️ Equal Moles, Different Masses

Visual Lab — Same Number of Particles, Different Properties

Key Concept: 1 mole of any substance always contains 6.022 × 10²³ particles (Avogadro's number), but the mass depends on the substance!

🔬 Each Beaker Contains Exactly:

6.022 × 10²³ particles

= 1 mole = Avogadro's Number (Nₐ)

Carbon (Graphite)

12.01 g

1 mole of Carbon atoms

Molar Mass12.01 g/mol

Particle TypeC atoms

State at RTSolid

Real Comparison~2 pencil leads

Copper

63.55 g

1 mole of Copper atoms

Molar Mass63.55 g/mol

Particle TypeCu atoms

State at RTSolid

Real Comparison~11 US pennies

Water

H₂O

18.02 g

1 mole of Water molecules

Molar Mass18.02 g/mol

Particle TypeH₂O molecules

State at RTLiquid

Real Comparison~18 mL (1.2 tbsp)

Each container has the SAME number of particles, but different types and arrangements!

12.01 g

C
Carbon

18.02 g

H₂O
Water

63.55 g

Cu
Copper