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Bab9 Penyelesaian segitiga form4 @day4

Question 5 — Oxidation & Reduction Identify what is oxidised and what is reduced in the following reaction: (3m) Mg + CuSO₄ → MgSO₄ + Cu

Question 4 — Acid & Base 25 cm³ of 0.2 mol/dm³ sodium hydroxide (NaOH) is neutralised by hydrochloric acid (HCl). Calculate the volume of 0.1 mol/dm³ HCl needed. (3m)

Question 3 — Electrolysis During electrolysis of dilute sulfuric acid, state the product formed at the: -Anode -Cathode Explain why. (4m)

Question 2 — Chemical Formula & Mole Calculate the relative molecular mass of Ca(OH)₂. (Ca = 40, O = 16, H = 1)

Question 1 — Atomic Structure State the number of protons, neutrons and electrons in ²⁷₁₃Al.

Bab1 Fungsi form 4 @day4

Bab2 persamaan kuadratik form 4...@day2

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