A vat containing 5 kg of acetic acid was accidentally spilled over a number of marble blocks. Acetic acid reacts with the calcite (CaCO₃) in marble: CaCO₃(s) + CH₃CO₂H(aq) → (CH₃CO₂)₂Ca(aq) + CO₂(g) + H₂O(l). If the marble blocks have a mass of 100 g, determine the number of blocks that was damaged. Assume the blocks are made of pure calcite and it is considered damaged if 5.0% of its mass reacted.