This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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Here are the solutions to your questions: Question c (from previous problem): Calculate the amount of solid NaOH in the initial 0.1 M NaOH solution portion that was diluted. Given: Molarity of NaOH solution (M) = 0.1 M Volume of NaOH solution (V) = 5.0 cm^3 Molar mass of NaOH: Na = 23, O = 16, H = 1 Step 1: Convert the volume from cm^3 to Liters. V = 5.0 cm^3 = 5.0 mL = 0.005 L Step 2: Calculate the number of moles of NaOH. Moles = Molarity × Volume (in L) Moles of NaOH = 0.1 mol/L × 0.005 L Moles of NaOH = 0.0005 mol Step 3: Calculate the molar mass of NaOH. Molar mass of NaOH = Na + O + H Molar mass of NaOH = 23 + 16 + 1 = 40 g/mol Step 4: Calculate the mass of NaOH. Mass = Moles × Molar mass Mass of NaOH = 0.0005 mol × 40 g/mol Mass of NaOH = 0.02 g --- Question 4: Study the diagrams below carefully a) Identify the types of crops illustrated in A, B and C. A: Cocoyam* B: Cassava* C: Sweet potato* b) What type of storage organ does each of the crops A, B and C represent? A: Corm* (modified stem) B: Tuberous root* (modified adventitious root) C: Tuberous root* (modified adventitious root) c) Name the parts labeled I, II, III, IV, V and VI. I: Scaly leaves* (or leaf scars) II: Cormel* (or sucker) III: Main corm* IV: Fibrous roots* V: Tuberous root* (or storage root) VI: Adventitious roots* (or root hairs) d) Tabulate three structural differences between the crops A and C. | Feature | Crop A (Cocoyam) | Crop C (Sweet potato) | | :------------------ | :--------------------------------------------- | :-------------------------------------------------- | | Type of organ | Modified stem (corm) | Modified root (tuberous root) | | External features | Has scaly leaves/leaf scars and buds ("eyes") | Has adventitious roots/root hairs; lacks scaly leaves | | Growth pattern | Grows as a compact, often rounded, underground stem | Grows as an elongated, irregular swollen root | e) State the usual methods of propagation of each of the crops in B and C. B (Cassava): Stem cuttings* C (Sweet potato): Stem cuttings (slips) or sprouts* from the tuberous roots Last free one today — make it count tomorrow, or type /upgrade for unlimited.