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[DOC File]Converting mass of a DNA band into moles:
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Converting mass of a DNA band into moles: First, decide if the band is composed of single or double-stranded DNA. Then, chose the correct conversion factor: Hyseq uses *: Single-stranded: 330 grams per mole per base. 330 (g/mol)/b. 330 g / ( mol ( b ) Double-stranded: 660 grams per mole per base pair.
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[DOC File]AP Chemistry study guide for Solutions (Chapter 11)
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One point earned for determination of molarity One point earned for conversion of molarity to molar mass . OR, moles solute = ( T x kg solvent) / Kf = 0.00611 mol (one point) molar mass = 1.570 g / 0.00611 mol = 257 g / mol (one point) OR, molar mass = (mass x Kf) / ( …
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[DOC File]Chapter 13 worksheet #1
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Molality is greater than molarity because the volume increases when the solute dissolves in water so now the volume of the solution is greater than the mass of the water. If there is very little solute (dilute solution) then it is a good assumption that the volume does not change and molarity equals molality.
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[DOC File]Comparing Mitosis and Meiosis
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Convert smaller or larger units to these as necessary. The “L” units cancel out and the “mol” units cancel out, leaving the mass in grams of the solutes needed to make the solution. Ex. A technician needs 50 mL of 0.5 M NaCl solution for an experiment. Using the Molarity Concentration Equation, the calculation would be as follows:
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[DOC File]Chapter 1 - Solutions
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This is the molarity of the final solution. b) Calculate the mass of KMnO4 needed to prepare the final solution if it was prepared directly. The mass of KMnO4 needed to prepare 250.0 mL of a 8.32 x 10-7 M solution directly is. mass KMnO4 = 0.250 L soln 8.32 x 10-7 mol 158.0 g KMnO4 = 3.29 x …
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[DOC File]CONCENTRATION UNITS
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First, convert the known amount of HCl (37.0 g) to moles: Next, convert the known mass of solution, 100 g solution, to liters of solution, using the density of the solution: Since the moles of solute (HCl) and volume of solution in liters is now know, calculate the molarity …
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[DOCX File]Stoichiometry Practice Worksheet
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Find the molarity of the following solutions: 1)0.5 moles of sodium chloride is dissolved to make 0.05 liters of solution. 2)0.5 grams of sodium chloride is dissolved to make 0.05 liters of solution. 3)0.5 grams of sodium chloride is dissolved to make 0.05 mL of solution. 4)734 grams of lithium sulfate are dissolved to make 2500 mL of solution.
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[DOC File]Chapter 13 worksheet #1
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Notice that the molality is a little bigger than molarity. Why are these two numbers similar and why is molality always greater than molarity? Why can’t one convert molality to molarity without additional information? What is the molarity of pure water at 4oC? (Hint: Use the density and molar mass of water.)
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[DOC File]AP Chemistry – Chapter 3, Stoichiometric Relationships ...
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One point earned for determination of molarity One point earned for conversion of molarity to molar mass . OR, moles solute = ( T x kg solvent) / Kf = 0.00611 mol (one point) molar mass = 1.570 g / 0.00611 mol = 257 g / mol (one point) OR, molar mass = (mass x Kf) / ( …
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[DOC File]Chemistry I-Honors
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Mole Concept / Molarity / Empirical & Molecular Formulas. Mole Concept. three basic quantities – molar mass, molar volume, number of particles. mass units on the periodic table are actually dimensionless . listed as amu (atomic mass units) most commonly, if the “mole” being used is actually a “gram-mole”, then the mass on the periodic ...
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Convert molarity to mass