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[DOC File]Chapter 13 worksheet #1
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mole fraction (X) and mole % moles of component / total moles of all components A . component . is any substance in the solution so it can be a solute or the solvent. mole % = mole fraction x 100. mass fraction and mass (or weight) percent (%) mass fraction = mass of component / total mass of soln. mass % = mass fraction x 100.
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[DOC File]Mole Conversion Worksheet
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: Cancel the label, then punch the numbers in on your calculator. Example: You are massing a 24 K gold chain, and find that it weighs 400 grams. Determine how many moles of Gold atoms you have. Steps 1: Obviously, you are solving for moles. Step 2: Looking at the periodic table, you find that gold weighs 197 AMU, or 197 grams per mole.
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[DOC File]1970
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Calculate the moles of solute per kg of solvent = ((Tfp/kf). Calculate the grams solute/kg solvent = Msolute/Msolvent (in kg). The molecular weight is this mass/moles. 1974 D. The heat liberated when 1.00 mole of acetic acid, HC2H3O2, reacts with 1.00 mole of sodium hydroxide, NaOH, is 12.7 kilocalories.
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[DOC File]Mole Calculation Worksheet
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1 mole = molar mass (could be atomic mass from periodic table or molecular mass) 1 mole = 22.4 L of a gas at STP (You do not need to worry about this yet) Each definition can be written as a set of two conversion factors. They are: 1 mole = molar mass(g) can be written as ____ 1 mole …
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[DOC File]Molar Mass Percent Composition
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Title: Molar Mass Percent Composition Subject: Chemistry Author: Jeff Christopherson Last modified by: UNIT5 Created Date: 1/24/2004 11:21:00 PM Company
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[DOC File]Mole Conversion Worksheet
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Step 5: Cancel the label, then punch the numbers in on your calculator. Example: You are massing a 24 K gold chain, and find that it weighs 400 grams. Determine how many moles of Gold atoms you have. Steps 1: Obviously, you are solving for moles. Step 2: Looking at the periodic table, you find that gold weighs 197 AMU, or 197 grams per mole.
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[DOC File]Converting mass of a DNA band into moles:
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Double-stranded: 660 grams per mole per base pair. 660 (g/mol)/bp. 660 g / ( mol ( bp ) Example problem: Find the number of moles which compose a 1.5kb band whose mass was determined to be 120 ng (by gel comparison to standards). (120 n g ) ( ( mol ( bp ) = 1.2E-4 nmol or 0.12 pmol
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[DOC File]Molar Mass worksheet
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Molar Mass worksheet. Determine the molar mass for the following elements: Ca Xe K. Fe Au O. Determine the molar mass for the following molecules/compounds
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[DOC File]UNIT 3 – WORKSHEET 1: MOLE PROBLEMS
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MOLE WORKSHEET NAME: DATE: 1. Determine the mass of. a. 2.50 moles of aluminum hydroxide _____ Al(OH)3 = 27 + (3 x 16) + (3 x 1) = 78 g/mol. 2.50mol x 78 g = 195 g. 1 mol. b. 0.0125 moles of dinitrogen pentoxide _____ N2O5 = (2 x 14) + (5 x 16) = 108 g/mol ...
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[DOC File]CHEMISTRY WORKSHEET # 2 MOLE PROBLEMS—THE MOLE …
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we simply calculate the sum of the “weights” of the atoms in the formula to determine the weight of a mole. These weights can be found on the periodic table. EXAMPLE: Calculate the molar mass (gram molecular weight) of a mole of iodine, I2. Round to 2 decimal places. 2 I = 2 X (126.90) = 253.80 g I2/mol
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Mole weight calculator