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 answers to your questions: a)* Two medical or pharmaceutical uses of HCO_3^- (bicarbonate): • As an antacid to relieve indigestion and heartburn. • To treat metabolic acidosis by increasing blood pH. b)* The ten elements in the second Transition Series (Period 5, d-block) are: • Yttrium (Y), Zirconium (Zr), Niobium (Nb), Molybdenum (Mo), Technetium (Tc), Ruthenium (Ru), Rhodium (Rh), Palladium (Pd), Silver (Ag), Cadmium (Cd). c)* Two qualities of protective agents: • They form a physical barrier on the skin or mucous membranes. • They possess mild astringent or adsorbent properties to soothe irritation. d)* The pharmaceutical significance of TiO_2 (Titanium Dioxide): • It is used as a pigment in tablets and capsules, and as an opacifying agent in sunscreens due to its ability to block UV radiation. e) Emollient laxatives are substances that soften stool by increasing its water and fat content, making it easier to pass. An example is Docusate sodium*. f)* Two medical uses of Co (Cobalt): • As a component of Vitamin B_12 (cobalamin), essential for red blood cell formation and neurological function. • In radiation therapy for cancer treatment (Cobalt-60). g)* Two uses of sodium citrate in our bodies: • It acts as a buffer to regulate blood pH. • It is involved in calcium metabolism and can prevent blood clotting. h)* The main use of HPO_4^2- (hydrogen phosphate ion) in the human body: • It is a crucial component of the phosphate buffer system, which helps maintain the pH balance of blood and intracellular fluids. i) Achlorhydria is a condition where the stomach produces little or no hydrochloric acid*. j)* The pharmaceutical importance of silicates: • They are used as adsorbents, disintegrants, and glidants in tablet formulations. An example is Magnesium trisilicate, used as an antacid. k)* One pharmaceutical use of N_2 gas and one medical use of liquid N_2: • N_2 gas (nitrogen gas) is used as an inert atmosphere to protect oxygen-sensitive drugs during manufacturing and packaging. • Liquid N_2 (liquid nitrogen) is used in cryosurgery for removing warts and other skin lesions. That's 4 down. 1 left today — send the next one.