Aries (3/21-4/19): Ag + HNO3 -> AgNO3 + NO2 + H2O The passionate and impulsive Aries is represented by the reaction between silver (Ag) and nitric acid (HNO3), which produces silver nitrate (AgNO3), nitrogen dioxide (NO2), and water (H2O). This reaction is often used in the creation of silver mirrors, with the volatile nitrogen dioxide gas producing a reflective silver surface on the glass. Taurus (4/20-5/20): C2H5OH + 3O2 -> 2CO2 + 3H2O As the sign of the Bull, Taurus is associated with stability and earthiness. The perfect chemical equation to represent this sign is the combustion of ethanol (C2H5OH) in the presence of oxygen (O2), which produces carbon dioxide (CO2) and water (H2O). This reaction is found in the burning of fossil fuels and in the production of alcohol. Gemini (5/21-6/20): CH3NH2 + HCl -> CH3NH3Cl The twins of the zodiac, Gemini represents duality and communication. Their chemical equation is the reaction between methylamine (CH3NH2) and hydrochloric acid (HCl) which forms the salt methylammonium chloride (CH3NH3Cl). This reaction is used in the production of a variety of chemicals such as pesticides, medicines, and solvents. Cancer (6/21-7/22): NaHCO3 + HCl -> NaCl + CO2 + H2O As the sign of the crab, Cancer is associated with home and family. The chemical equation that represents this sign is the reaction between sodium bicarbonate (NaHCO3) and hydrochloric acid (HCl) which forms sodium chloride (NaCl), carbon dioxide (CO2) gas, and water (H2O). This reaction is used in the baking industry to create the characteristic rise of baked goods. Leo (7/23-8/22): 2H2 + O2 -> 2H2O As the sign of the lion, Leo is associated with power and strength. The chemical equation that represents this sign is the reaction between hydrogen (H2) and oxygen (O2) which produces water (H2O). This reaction is used in the production of rocket fuel and is a key part of the process of combustion. Virgo (8/23-9/22): C6H12O6 + 6O2 -> 6CO2 + 6H2O Virgos are known for their attention to detail and practicality. The equation that represents them is the reaction between glucose (C6H12O6) and oxygen (O2), which produces carbon dioxide (CO2) and water (H2O). This reaction is central to the process of cellular respiration, which converts glucose into energy for the body. Libra (9/23-10/22): Fe + 2HCl -> FeCl2 + H2 As the sign of balance and harmony, Libra's chemical equation is the reaction between iron (Fe) and hydrochloric acid (HCl), which forms iron chloride (FeCl2) and hydrogen gas (H2). This reaction is used in the production of chemicals such as pigments, water treatment, and as a reagent in chemical research. Scorpio (10/23-11/21): C6H5Cl + Cl2 -> C6H4Cl2 + HCl The sign of Scorpio is associated with mystery and transformation. Their equation is the reaction between chlorobenzene (C6H5Cl) and chlorine gas (Cl2), which forms dichlorobenzene (C6H4Cl2) and hydrochloric acid (HCl). This reaction is used in the production of insecticides, herbicides, and as a solvent for a variety of materials. Sagittarius (11/22-12/21): NH3 + HCl -> NH4Cl As the adventurous and exploratory sign, Sagittarius is represented by the reaction between ammonia gas (NH3) and hydrochloric acid (HCl), which forms ammonium chloride (NH4Cl). This reaction is used in the production of fertilizers, as a flux in soldering, and as an electrolyte in dry cells. Capricorn (12/22-1/19): CaCO3 + HCl -> CaCl2 + CO2 + H2O Capricorns are known for their practicality and resourcefulness. Their equation is the reaction between calcium carbonate (CaCO3) and hydrochloric acid (HCl), which forms calcium chloride (CaCl2), carbon dioxide (CO2) gas, and water (H2O). This reaction is important in the formation of limestone and in the industrial production of calcium chloride. Aquarius (1/20-2/18): 2H2 + N2 -> 2NH3 As the sign of innovation and independence, Aquarius's equation is the reaction between hydrogen (H2) and nitrogen (N2), which produces ammonia gas (NH3). This reaction is used in the production of fertilizers, in the manufacturing of plastics, and as a refrigerant. Pisces (2/19-3/20): C12H22O11 + H2O -> 12C + 11H2O Pisces is associated with creativity and imagination. Their equation is the hydrolysis of sucrose (C12H22O11) in the presence of water (H2O) which forms carbon (C) and water (H2O). This reaction is used in the production of biofuels and in the decomposition of organic matter in the environment.