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[DOC File]Standardizing a Sodium Hydroxide (NaOH) Solution
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Record the exact weight you measured. Dilute to the line on the flask with distilled water. Measure 25.0 mL of the Tang® solution (using a calibrated pipette) and place it into an Erlenmeyer flask. Add an additional 50 mL of distilled water to the flask.
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[DOC File]Calculations
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1 nmole = molecular weight (ng) When to use the molecular weight: Molecular weights are used in calculations when you want to convert from concentrations expressed in Molar units (M, mM, M etc) to concentrations expressed in g/L, g/100 mL, % (w/v), mg/mL and vice versa. It is also used when you need to work out how much of a particular compound ...
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[DOC File]Chemistry 101L - Boyd County Public Schools
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The molecular geometry describes the way the atoms are arranged in space; it differs from an electron geometry only if there are lone pairs on the central atom. There are a number molecular geometries, but all of these can be obtained by first drawing the arrangement of the electron groups as above (showing the correct 3-D angles), and then ...
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[DOC File]Summer Assignment
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When using these rules, assume that exact numbers have an infinite number of significant figures (or decimal places). For example, there are exactly 12 inches in one foot. Solving Problems Using Dimensional Analysis: The Factor-Label Method . Units may be used as a guide in solving problems. First decide what units you need for your answer.
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[DOC File]Homepage - Texas Commission on Environmental Quality - …
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Fraction 1 - 0.60 1 - 0.97 1 - 0.95 = 0.016 Weight Fraction ton/yr gal Yr 2000 lb Coating Weight Weight Emission Constituent Fraction Fraction ton/yr Rate (ton/yr) Strontium Chromate 0.10 0.016 0.0016 Titanium Dioxide 0.15 0.016 0.0024 Iron Oxide 0.05 0.016 0.0008 Epoxy Resin 0.30 0.016 0.0048
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[DOC File]AP* Chemistry - PC\|MAC
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3.3 MOLAR MASS, MOLECULAR WEIGHT, AND FORMULA WEIGHT • molar mass, MM--the mass in grams of Avogadro's number of molecules; i.e. the mass of a. mole! • molecular weight, MW--sum of all the atomic weights of all the atoms in the formula (it is. essential you have a correct formula as you’ll painfully discover!)
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[DOC File]AP Chemistry Lab Manual
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VSEPR and Molecular Geometry 25. Formation of a Coordination Complex of Copper (II) 26 ... Measure out a small quantity (0.15 – 0.20g) of the unknown into each weigh boat. It is not necessary to know the exact mass. Using a graduated cylinder, precisely measure 50.0 mL of distilled water into a 150 mL beaker. ... and a calculator. Always be ...
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[DOC File]AP Chemistry: Course Introduction Sheet
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Formula weight = sum of atomic weights of the atoms in a formula; we can use the term molecular weight if the substance is a molecular formula or molar mass for either. Example: Find the formula weight of calcium nitrate. calcium nitrate is Ca(NO3)2. 1 Ca atom = 1(40.1 amu) = 40.1 amu. 2 N atoms = 2(14.0 amu) = 28.0 amu
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[DOC File]CHAPTER 3
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3.3 molar mass, molecular weight, and formula weight molar mass, MM--the mass in grams of Avogadro=s number of molecules; i.e. the mass of a mole! molecular weight, MW--sum of all the atomic weights of all the atoms in the formula (it is essential you have a …
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[DOC File]Chemistry Enhanced Scope & Sequence
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Molecular shape determines a compound’s state of matter, boiling point, freezing point, viscosity, volatility, surface tension, and the nature of its reactions. The geometry of a small molecule can be predicted by examining the central atom and identifying the number of atoms bonded to it and the number of unshared electron pairs surrounding it.
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Exact molecular weight calculator