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What are the causes of heterochromia?
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.4.hw 13 1.The diagram shows two aqueous solutions separated by a semi-permeable membrane. Which diagram illustrates what this system will look like after some time has passed? 2.Classify each statement as applying to osmosis, dialysis, or both osmosis and dialysis.Osmosis, Dialysis, Bothanswer bank ; involves the movement of small particles across a semipermeable membrane, may be used as a way to separate small molecules and ions from Colloids, involves the movement of water across a semipermeable membrane, can be used medically in artificial kidney machines to remove urea, involves the movement of water across a cell membrane3.Arrange the boiling points of the aqueous solutions, relative to pure water. 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If the total mass of the mixture is 838.1 g, what masses of CaCl2 and water were used?mass of CaCl2:gmass of water:gCalculate the molarity of the two solutions.The first solution contains 0.300 mol of NaOH in 2.10 L of solution.molarity:MThe second solution contains 14.9 g of NaCl in 639 mL of solution.molarity:M20.Calculate the mass percent of solute in each solution.Calculate the mass percent of 3.57 g KCl dissolved in 58.6 g H2O.mass percent:%Calculate the mass percent of 25.5 g KNO3 dissolved in 848 g H2O.mass percent:%21.Classify each of the events based on whether the solubility of the gas will increase, decrease, or stay the same.Gas solubility increases,Gas solubility decreases,Gas solubility does not changeAnswer bank : the temperature is decreased, O2 as the temperature of a body of water rises, air in the blood as a diver descends 10 m, and the pressure increases by 1 atm , the pressure of a gas over a solvent is decreased, the partial pressure of an anesthetic gas is increased 22. Using the gas solubility interactive, consider how the solubility of a gas changes when pressure or temperature are changed. How many molecules of O2 are dissolved in solution under each condition?when pressure is lowestwhen pressure is in the middlewhen pressure is highestwhen temperature is lowestwhen temperature is in the middlewhen temperature is highestanswer bank ; 4,2,623.Use the information provided in the gas solubility interactive to complete the statements.As pressure decreases, the solubility of a gas .As temperature decreases, the solubility of a gas .increases,decreases,does not change 24.When potassium chromate, K2CrO4 is dissolved in water, what ions are produced? K2+2+CrO2โ4 no ions are formed 2K++Cr6++4O2โ 2K++CrO2โ4 2K++Cr2โ+2O225.Consider the solubilities of a particular solute at two different temperatures.Temperature (โ๐)Solubility (๐ /100 ๐ ๐2๐)20.034.630.080.5Suppose a saturated solution of this solute was made using 78.0 g H
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Constants can be found in the table of colligative constants.๐f=โC๐b=โC6.Calculate the molality of a solution formed by adding 3.80 g NH4Cl to 10.1 g of water. molality:๐ NH4Cl7.Lead(II) nitrate and ammonium iodide react to form lead(II) iodide and ammonium nitrate according to the reactionPb(NO3)2(aq)+2NH4I(aq)โถPbI2(s)+2NH4NO3(aq)What volume of a 0.690 M NH4I solution is required to react with 487 mL of a 0.480 M Pb(NO3)2 solution?volume:mLHow many moles of PbI2 are formed from this reaction?moles:mol PbI28.The balanced equation for the neutralization reaction of aqueous H2SO4 with aqueous KOH is shown.H2SO4(aq)+2KOH(aq)โถ2H2O(l)+K2SO4(aq)What volume of 0.250 M KOH is needed to react completely with 17.3 mL of 0.285 M H2SO4? volume:mL9.Consider the neutralization reaction2HNO3(aq)+Ba(OH)2(aq)โถ2H2O(l)+Ba(NO3)2(aq)A 0.115 L sample of an unknown HNO3 solution required 26.9 mL of 0.150 M Ba(OH)2 for complete neutralization. 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If the total mass of the mixture is 838.1 g, what masses of CaCl2 and water were used?mass of CaCl2:gmass of water:gCalculate the molarity of the two solutions.The first solution contains 0.300 mol of NaOH in 2.10 L of solution.molarity:MThe second solution contains 14.9 g of NaCl in 639 mL of solution.molarity:M20.Calculate the mass percent of solute in each solution.Calculate the mass percent of 3.57 g KCl dissolved in 58.6 g H2O.mass percent:%Calculate the mass percent of 25.5 g KNO3 dissolved in 848 g H2O.mass percent:%21.Classify each of the events based on whether the solubility of the gas will increase, decrease, or stay the same.Gas solubility increases,Gas solubility decreases,Gas solubility does not changeAnswer bank : the temperature is decreased, O2 as the temperature of a body of water rises, air in the blood as a diver descends 10 m, and the pressure increases by 1 atm , the pressure of a gas over a solvent is decreased, the partial pressure of an anesthetic gas is increased 22. Using the gas solubility interactive, consider how the solubility of a gas changes when pressure or temperature are changed. How many molecules of O2 are dissolved in solution under each condition?when pressure is lowestwhen pressure is in the middlewhen pressure is highestwhen temperature is lowestwhen temperature is in the middlewhen temperature is highestanswer bank ; 4,2,623.Use the information provided in the gas solubility interactive to complete the statements.As pressure decreases, the solubility of a gas .As temperature decreases, the solubility of a gas .increases,decreases,does not change 24.When potassium chromate, K2CrO4 is dissolved in water, what ions are produced? K2+2+CrO2โ4 no ions are formed 2K++Cr6++4O2โ 2K++CrO2โ4 2K++Cr2โ+2O225.Consider the solubilities of a particular solute at two different temperatures.Temperature (โ๐)Solubility (๐ /100 ๐ ๐2๐)20.034.630.080.5Suppose a saturated solution of this solute was made using 78.0 g H
SCIHS 706 Milwaukee Area Technical College Stoichiometry Questions
Interpreting EquationsAfter balancing each of these equations, interpret them in terms of relative quantities in four ways ...
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Interpreting EquationsAfter balancing each of these equations, interpret them in terms of relative quantities in four ways. (1) number of representative particles (identify each substances as an atom, ion, formula unit or molecule), (2) number of moles, (3) masses of reactants and products (4) volumes of gases at STP (only if ALL of the substances are gases). If the equation has substances that are NOT all gases, you need to indicate that as being the reason you could NOT interpret for volume.1) N2(g) + H2(g) ---> NH3(g)2) K(s) + H2SO4(aq) --> K2SO4(aq) + H2(g)3) C3H8(g) + O2(g)--> CO2(g) + H2O(g)
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