aqua ammonia
51Black silver art — Black silver (Min.), stephanite , Ag5SbS4 orthorhombic (silver antimony sulfide) [ Rocks and Minerals: A Guide to Field Identification (Golden Field Guide from St. Martin s Press) by Charles A. Sorrell and George Sandstrom (2001) p.114] ,… …
52Mrs Winslow's soothing syrup — was a medicinal product formula compounded by Mrs. Charlotte N. Winslow and first marketed by her son in law Jeremiah Curtis and Benjamin A. Perkins in Bangor, Maine, USA in 1849. The formula consisted of morphine sulphate (65 mg per fluid ounce) …
53coordination compound — Chem. complex (def. 10). Also called coordination complex. * * * ▪ chemistry Introduction any of a class of substances with chemical structures in which a central metal atom is surrounded by nonmetal atoms or groups of atoms, called ligands… …
54Nitric acid — Nitric acid …
55List of alchemical substances — Alchemical studies produced a number of substances, which were later classified as particular chemical compounds or mixtures of compounds.Many of these terms were in common use into the 20th century.* Aqua Fortis nitric acid, can be formed by 2… …
56Nitrogen — carbon ← nitrogen → oxygen ↑ N ↓ P …
57Fishkeeping — is a popular hobby concerned with keeping fish in the home aquarium or garden pond. Types of fishkeeping The hobby can be broadly divided into three specific disciplines, freshwater, brackish, and marine (also called saltwater) fishkeeping.… …
58platinum group — ▪ chemical element group Introduction six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and …
59Hydrolysis — is a chemical reaction during which one or more water molecules are split into hydrogen and hydroxide ions which may go on to participate in further reactions. [Compendium of Chemical Terminology, [http://goldbook.iupac.org/H02902.html… …
60Urea — Urea …
