Molar MassChemistryThe MoleWhat's a Mole?Molar MassConverting Between Moles, Molecules, and GramsPercent Composition When speaking about doing chemical reactions, it isn't very handy to say that…
(Encyclopedia) erythromycinerythromycinĭrĭthˌrōmīˈsĭn [key], any of several related antibiotic drugs produced by bacteria of the genus Streptomyces (see antibiotic). Erythromycin is most effective…
(Encyclopedia) neomycinneomycinnēˌōmīˈsĭn [key], broad spectrum antibiotic effective against both gram positive and gram negative bacteria (see Gram's stain). It interferes with protein synthesis in…
(Encyclopedia) cephalosporincephalosporinsĕfˌəlōspôrˈĭn [key], any of a group of more than 20 antibiotics derived from species of fungi of the genus Cephalosporium and closely related chemically to…
ChemistryIntermediate-Level Science ProjectsChemistryCan You Be a Human Battery?What Materials Make the Best Crystals? Are All Pennies Created Equal? The penny, which has been around…
ChemistryIntermediate-Level Science ProjectsChemistryCan You Be a Human Battery?What Materials Make the Best Crystals? Are All Pennies Created Equal? The penny, which has been around in the…
(Encyclopedia) Rosse, William Parsons, 3d earl ofRosse, William Parsons, 3d earl ofrôs [key], 1800–1867, British astronomer and constructor of telescopes. He served as member of Parliament for King's…
(Encyclopedia) latent heat, heat change associated with a change of state or phase (see states of matter). Latent heat, also called heat of transformation, is the heat given up or absorbed by a unit…
Gas StoichiometryChemistryStoichiometryStoichiometry: Fun to Say, Fun to Do!Simple Stoichiometry CalculationsLimiting Reactant ProblemsGas Stoichiometry Though we've limited our discussion of…
(Encyclopedia) chloramphenicolchloramphenicolklōrˌămfĕnˈəkŏlˌ [key], antibiotic effective against a wide range of gram-negative and gram-positive bacteria (see Gram's stain). It was originally…
