Vitamin C is chemically known as ascorbic acid (C6H8O6). It is a vital nutrient involved in the repair of tissue and the enzymatic production of certain neurotransmitters. Deficiency leads to scurvy. Retinol is Vitamin A, Calciferol is Vitamin D, and Tocopherol is Vitamin E.
Explanation:
Dalton considered atoms the ultimate, indivisible particles. The discovery of electrons (J.J. Thomson), protons (Rutherford), and neutrons (Chadwick) proved atoms are divisible and have internal structure. Isotopes showed atoms of same element can differ. However, Dalton's theory still formed the foundation of modern chemistry.
Explanation:
Smelting is the pyrometallurgical process of extracting a metal from its ore by heating it beyond its melting point and reducing the metal oxide with a carbonaceous reducing agent (like coke or coal). Flux is often added to remove impurities as slag. Calcination and roasting are oxidation processes.
Explanation:
Since the room temperature (25°C) is between its melting point (-10°C) and boiling point (50°C), the substance exists in the liquid state. If the temperature were below -10°C, it would be solid, and above 50°C, it would be gas. This is based on standard phase transition principles.
No comments yet. Be the first to start the discussion!