1. When magnesium ribbon burns in oxygen, a vigorous exothermic reaction takes place, resulting in the formation of magnesium oxide (MgO). The chemical equation for this reaction is: 2Mg(s) + O₂(g) → 2MgO(s) The magnesium atoms react with oxygen molecules to produce magnesium oxide. The combustion is hRead more

    When magnesium ribbon burns in oxygen, a vigorous exothermic reaction takes place, resulting in the formation of magnesium oxide (MgO). The chemical equation for this reaction is:
    2Mg(s) + O₂(g) → 2MgO(s)
    The magnesium atoms react with oxygen molecules to produce magnesium oxide. The combustion is highly exothermic, releasing a significant amount of heat and intense white light. The bright white light produced during the reaction is characteristic of burning magnesium, making it useful in applications like photography and fireworks.

    See less
    • 9
  2. The product of the reaction between magnesium and oxygen is magnesium oxide (MgO). This reaction involves the combustion of magnesium in the presence of oxygen: 2Mg(s) + O₂(g) → 2MgO(s) During this exothermic reaction, magnesium atoms (Mg) react with oxygen molecules (O₂) to form magnesium oxide (MgRead more

    The product of the reaction between magnesium and oxygen is magnesium oxide (MgO). This reaction involves the combustion of magnesium in the presence of oxygen:
    2Mg(s) + O₂(g) → 2MgO(s)
    During this exothermic reaction, magnesium atoms (Mg) react with oxygen molecules (O₂) to form magnesium oxide (MgO). The resulting compound, magnesium oxide, is a white, powdery substance. This reaction is commonly observed when magnesium metal undergoes combustion, such as when a magnesium ribbon burns in the presence of oxygen, producing magnesium oxide and releasing heat and light.

    See less
    • 9
  3. The dazzling white flame produced when magnesium ribbon burns is due to the intense heat generated during the combustion reaction. When magnesium reacts with oxygen to form magnesium oxide (2Mg + O₂ → 2MgO), the reaction is highly exothermic, releasing a substantial amount of energy in the form of hRead more

    The dazzling white flame produced when magnesium ribbon burns is due to the intense heat generated during the combustion reaction. When magnesium reacts with oxygen to form magnesium oxide (2Mg + O₂ → 2MgO), the reaction is highly exothermic, releasing a substantial amount of energy in the form of heat and light. The emitted light consists of a broad spectrum, including a significant portion in the visible range. The intense brightness, especially in the visible white light region, is a result of the high temperature reached during the combustion, creating the striking visual effect observed when magnesium ribbon burns.

    See less
    • 9
  4. Calcium sulfate hemihydrate is commonly known as "Plaster of Paris" due to its historical association with the gypsum deposits found near Paris, France. The name originated in the 17th century when large quantities of this substance were mined from Montmartre, a region in Paris. The hemihydrate formRead more

    Calcium sulfate hemihydrate is commonly known as “Plaster of Paris” due to its historical association with the gypsum deposits found near Paris, France. The name originated in the 17th century when large quantities of this substance were mined from Montmartre, a region in Paris. The hemihydrate form of calcium sulfate, obtained by partially dehydrating gypsum, has excellent moldability and sets into a hard, durable material when mixed with water. Its versatility in casting and sculpting applications, as well as its early association with the Parisian gypsum mines, led to the popularization of the name “Plaster of Paris” for calcium sulfate hemihydrate.

    See less
    • 9
  5. When gypsum (calcium sulfate dihydrate, CaSO₄⋅2H₂O) is heated at 373 K (100°C), it undergoes a process known as calcination. During calcination, gypsum loses water molecules and transforms into calcium sulfate hemihydrate, commonly known as Plaster of Paris (CaSO₄⋅0.5H₂O): CaSO₄⋅2H₂O 373K/heat⟶ CaSORead more

    When gypsum (calcium sulfate dihydrate, CaSO₄⋅2H₂O) is heated at 373 K (100°C), it undergoes a process known as calcination. During calcination, gypsum loses water molecules and transforms into calcium sulfate hemihydrate, commonly known as Plaster of Paris (CaSO₄⋅0.5H₂O):
    CaSO₄⋅2H₂O 373K/heat⟶ CaSO₄⋅0.5H₂O+ 1.5H₂O
    The produced Plaster of Paris has reduced water content, making it suitable for various applications like casting, molding, and setting broken bones in the medical field due to its ability to harden quickly when mixed with water.

    See less
    • 9