Chem 1320 1st Edition Lecture 6Outline of Last Lecture I. Chemical EquationsII. Balancing Chemical EquationsOutline of Current Lecture I. Translating Written EquationsII. Atomic MassesIII. Molecular Mass or Formula MassCurrent LectureI. Translating Written EquationsSolid nickel (II) sulfide + oxygen nickel (II) oxide + sulfur dioxide2NiS+3O2 2NiO + 2SO2Combustion reaction- when something burns it reacts with oxygen in the air II. Atomic MassesAtomic mass is one unit or an amu which equals 1/12 mass of 12 carbon. 1 amu = 1.661 x 10-24 g or 1.1661 x 10-27kg1g =6.022 x 1023amuNa= 6.022 x 1023mol-1 (avogadro’s number) III. Molecular Mass or Formula MassKOH: K= 39.098g/molO= 15.99g/molThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.H= 1.008g/mol55.096 g/mol (add all the elements
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