Homework Answers
Since NaCl is a smaller molecule when compared to sucrose, only 58 grams of NaCl is required to make 1 molar comcentration while 342 grams of sucrose are needed to create the same 1 molar concentration and since 20 percent means 20 grams are added in both the cases,
the concentration of NaCl is higher so according to the equation, the osmotic pressure of NaCl should also be:
HIGHER.
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Figure 4: Osmotic Pressure Tosm = CRT C = the total solute concentration in moles/liter R...
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Questions I a) What is osmosis? b) What is dialysis? Can MgSO4 pass through? Explain. 2....
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I
need help figuring out #5.35, 5.37, 5.45, 5.57, and 5.71
Documents Pearson Updad Assgrmerti Eimiting. Nos |UNC 217 A gas-filled balloon having a volume of 2.50 L at 1.2 atm and 25°C is allowed to rise to the strato sphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 x 10 atm, respectively. Calculate the final volume of the balloon 5.35 The temperature of 2.5 L of a gas initially at...
Membrane Separation II Reverse Osmosis (a) Derive van't Hoff's equation (osmotic pressure π-CRT). (b) A feed solution containing 5g NaCl/L (ρ-1001kg/m3) is purified using a reverse osmosis system. Water permeability constant (Aw) and a solute (NaCI) permeability constant (As) are 5 x 10 kg/m2s atm, and 4 x 10-7m/s, respectively. AP 30 atm. Assume that the fraction recovered of the solvent water is 0.15. The flow rate q2 of the permeate water solution is 50 L/min. Calculate ci and c2...
28) 28) What is the osmotic pressure of a 0.25 M solution of sucrose at 37°C? (R = 0.0821 L-atm/K mol) A) 100 atm B) 6.4 atm 6.6 x 10-5 atm D) 940 atm E) 0.76 atm
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of the solution. Concentrations are typically expressed as Mass al.) (% m/m) which is the mass of the solute (g) divided by the mass of the solution [solute+ solvent] (g)x 1000/0; or as Volume ol.) (% v/v ) which is the volume of the solute in a fixed volume of solution (1O0mL of solution) x 1000/0; or less commonly in the laboratory,...
Table 1 Factors Affecting Solubility le 1. Identity general trends. Exceptions do sometimes occur, we will leam about exceptions and the reasons behind them later. Condition Nonbonding Interaction (if applicable) Dipol-dipole polar solute/polar solvent Effect on Solubility The solute dissolves. nonpolar solute/nonpolar solvent polar soluto/nonpolar solvent nonpolar solute/polar solvent increasing the pressure of a gas over a liquid solvent increasing the temperature of a dissolving solid increasing the temperature of a dissolving gas Table 2 Measures of Solution Concentration Quantity...
Question 20 0/5 pts The osmotic pressure of blood is 7.65 atm at 37°C. If blood were considered a solution of NaCl, what is the molar concentration of NaCl in blood? Assume an ideal van't Hoff factor Where: n = iMRT R is the ideal gas law constant (0.08205 bar mol K and T is the absolute temperature 23.2
Questions I a) What is osmosis? b) What is dialysis? Can MgSO4 pass through? Explain. 2. Can starch pass through a dialyzing membrane? (Support your claim with evidence from the experiment.) 3. Explain why people who are adrift in a lifeboat without a supply of fresh water are advised not to drink ocean water. note - Ocean water is saltier than body fluids like blood plasma. 4. In terms of osmosis, what happens when fresh water is inhaled into a...
need help
Insert the missing coefficients to completely balance each chemical equation. equation 1: S+6 HNO, H,SO, + NO, +H,0 equation 2: 3 Cu + 8 HNO, Cu(NO), + NO + H2O We were unable to transcribe this imageBalance the equations by inserting coefficients as needed. equation 1: Sb + Cl, — SbCl, equation 2: Mg, N, + HCI — MgCl, +NH, Select the equation that best describes the reaction. O A+B, AB O 4 A +8 B — 4AB,...
What is the volume of the sphere in Procedure 2 in units of
cm3? Express your answer to two significant figures.
LAB 14: IDEAL GAS LAW BASIC CONCEPTS TEXTBOOK: SECTIONS 15.2, YOUNG, 10TH EDITION DEFINITIONS Volume: The space taken up by an object, measured in cubic meters (m"). Pressure: For an enclosed gas, pressure is defined as the force exerted per area by the gas on the container walls, measured in Pascal (1 N/m) Temperature: A measure of the average...
I
need help figuring out #5.35, 5.37, 5.45, 5.57, and 5.71
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