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5. Once upon a time in a small village, there lived a young girl named Lily. She was known for her mischievous nature and adventurous spirit. One sunny day, Lily decided to explore the nearby forest, despite her parents' warnings. She ventured deep into the woods, unaware of the dangers that awaited her.
As she roamed through the forest, Lily stumbled upon a hidden treasure chest. Excitement filled her heart as she imagined the riches that lay within. Ignoring her better judgment, she eagerly opened the chest, only to find a swarm of angry bees guarding their honey. Panicking, Lily tried to run away, but the bees chased after her, stinging her relentlessly.
In her desperation, Lily stumbled upon a small cottage tucked away in a clearing. She banged on the door, hoping for help. To her relief, an old woman opened the door and quickly ushered her inside. The woman, named Agnes, tended to Lily's wounds and offered her a warm cup of tea.
As they sat by the fireplace, Lily shared her story with Agnes. The wise old woman listened attentively and then smiled. She told Lily a tale of a magical flower that could calm the bees and heal any wounds. The flower, known as the "Blossom of Peace," grew deep within the heart of the forest.
Determined to put an end to her misadventure, Lily set off on a new quest. With Agnes as her guide, they journeyed through the forest, facing various challenges along the way. Finally, after much perseverance, they found the elusive Blossom of Peace.
Lily carefully plucked the flower and held it up to the bees. Miraculously, the bees calmed down, their anger subsiding. Grateful for their release, they flew away, leaving Lily unharmed.
Filled with joy and relief, Lily returned to the village, where her worried parents waited. They embraced her tightly, grateful for her safe return. Lily shared her tale, and the villagers marveled at her bravery and the power of the Blossom of Peace.
From that day forward, Lily became known as the "Hero of the Bees." She learned the importance of listening to wise advice and the value of perseverance. The village celebrated her courageous spirit, and all agreed that, despite the initial mishap, everything had turned out well in the end.
And so, the saying "All is well that ends well" held true in Lily's remarkable adventure, reminding everyone that even in the face of
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3c. (i) Aqueous solutions of FeSO₄ are freshly prepared when required for use because FeSO₄ is prone to oxidation in the presence of air, leading to the formation of insoluble iron(III) compounds. Freshly prepared solutions ensure accurate and reliable results.
(ii) Titrations involving tetraosomanganate (VII) solutions do not require any other indicator because the deep purple color of the MnO₄⁻ ion serves as its own indicator. The color disappears when the reaction is complete, indicating the endpoint of the titration.
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3a. To prepare 500 cm³ of 0.10 mol/dm³ HCl from a stock solution with a concentration of 2.0 mol/dm³, you would need to dilute it. You can use the formula C1V1 = C2V2, where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume. Plugging in the values, you would have (2.0 mol/dm³)(V1) = (0.10 mol/dm³)(500 cm³). Solving for V1, you would get V1 = (0.10 mol/dm³)(500 cm³) / (2.0 mol/dm³).
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