🔬 Part 1: Understanding Moles and Formula Mass

Given: H = 1, O = 16

Mr of H₂O = _________

Number of moles = _________ mol

Mass = _________ g

⚛️ Part 2: Avogadro's Constant and Particle Calculations

Avogadro's constant = _________________ particles per mole

Formula: Number of particles = moles × 6.02 × 10²³

Number of atoms = _________________ atoms

Number of moles = _________ mol

🚀 Part 3: Multi-step Challenge Problems

Given: Al = 27

a) The number of moles of aluminium:

b) The total number of aluminium atoms:

Given: C = 12, O = 16

Hint: Remember that each CO₂ molecule contains 2 oxygen atoms

Number of oxygen atoms = _________________