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[DOC File]Chemistry I-Honors
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Using the density of a solution and its percent by weight composition, the molarity can be found. Example problems: What is the molarity of a solution if 44.0 grams of solid sodium carbonate is added to enough water to make 250.0 ml of solution? 44.0 grams / (106.0 g/mole) M = ----- …
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[DOCX File]Notes: Concentration (Molarity)
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The solution freezes at 4.92°C. Determine the molecular weight of the compound. The freezing pt of pure benzene is 5.48°C, and the K. f. for benzene is 5.12°C/m.Ex: A 37.0 g sample of a new covalent compound was dissolved in 200.0 g of water. The resulting solution froze at –5.58°C. What is the molecular weight of the compound?
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[DOC File]AP Chemistry study guide for Solutions (Chapter 11)
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molecular solutes. Calculate changes in freezing point and boiling point in . ionic solutes. Calculate the vapor pressures of solutions (Raoult's Law) Calculate osmotic pressure. Calculate titration data. Explain the nonideal behavior of solutions. Sample AP problems. 15. The weight of H2SO4 (molecular weight 98.1) in 50.0 milliliters of a 6.00 ...
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[DOC File]Honors Chemistry I
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A certain compound is known to have a molecular weight slightly under 320 grams. If a sample contains 0.226 moles of aluminum, 8.21 grams of carbon, and 21.6 grams of oxygen, what is the molecular formula? ... Molarity / Empirical Formula / Molecular Formula Worksheet. Solution Set.
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[DOC File]Lerner Research Institute
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COMPONENTS Molecular Weight Concentration (mg/L) Molarity (mM) Amino Acids L-Arginine hydrochloride 211 126.64 0.600 L-Cystine 2HCl 313 31 0.0990 L-Glutamine 146 292 2.00 L-Histidine hydrochloride-H2O 210 42 0.200 L-Isoleucine 131 52 0.397 L-Leucine 131 52 0.397 L-Lysine hydrochloride 183 72.5 0.396 L-Methionine 149 15 0.101 L-Phenylalanine 165 ...
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[DOC File]Calculations
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If 1 mmole = molecular weight (mg) then 10 mmoles of NaOH is 400 mg or 0.4 g of NaOH. You would weigh it out and dissolve in ~ 150 mL of water. Once it is in solution make it up to 200 mL. ... To interconvert between concentration expressed in molarity and weight per volume units you need to use the molecular weight.
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[DOC File]1) You wish to make a 0
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6) In the Convertion of Molarity to Molality, in addition to the unit molarity of the solution, one ADDITIONALLY needs: the molecular weight the solute and the density of the solution. the molecular weight of the solvent and the density of the solvent. the volume and number of moles of solvent
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[DOC File]AP Chemistry
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(a) Calculate the molality of a 20.0 percent by weight aqueous solution of NH4Cl. (Molecular weight: NH4Cl = 53.5) (b) If this NH4Cl solution is assumed to be ideal and is completely dissociated into ions, calculate the pressure of this solution at 29.0˚C. (c) Actually a solution of …
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[DOC File]University Of Maryland
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0.8 32 To convert grams to moles, multiply grams by 1 / molecular weight. Add all the molarity from first hint. Answer: 19 * 1/35 + 10.5 * 1/23 + 1.3 *1/24 + .8 * 1/32 = 0.54 + 0.46 + 0.054 + 0.025 = 1.08 OsM = 1080 mOsM Why does osmolarity matter? Why does all this matter? Water has a tendency to move across a membrane from a lower osmolarity ...
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[DOC File]1970
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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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Molecular weight molarity