CHEM-MASS LAB

Instructions:

• Choose whether Relative Molecular Mass or Formula Mass is the appropriate term for each chemical substance.
• Calculate the exact total numerical mass using the provided relative atomic mass values matching the HKDSE Periodic Table (e.g. S = 32.1, Ca = 40.1, Cl = 35.5, Cu = 63.5, Fe = 55.8, H = 1.0, O = 16.0).
• For hydrated ionic salts, remember to calculate the mass of the full compound including water of crystallisation (· xH₂O).