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A compound made of elements A and B, has a cubic unit...
1. Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of...
1. Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 112 kJof heat? 2. Calculate the mass of nitrogen dissolved at room temperature in an 97.0 Lhome aquarium. Assume a total pressure of 1.0 atmand a mole fraction for nitrogen of 0.78. 3. Use Henry's law to determine the molar solubility of helium at a pressure of 2.0 atmand 25 ∘C....
1) At physiological temperature (37OC) the osmotic pressure of blood is 7.65 atm. What concentration (%...
1) At physiological temperature (37OC) the osmotic pressure of blood is 7.65 atm. What concentration (% W/V) of potassium chloride (KCl, MW = 74.5) solution has the same osmotic pressure of blood? Assume the specific gravity of the solution is 1. 2)An ophthalmic (eye drop) formulation contains 100 mEq of sodium chloride (molecular weight = 58.5 g/mole). Calculate the amount (in grams) of sodium chloride needed for the formulation. 3)Methanol (CH3OH, MW = 32) is a nonelectrolyte. What is the...
Hello, I need help solving the 3 parts of this question. Part - Factors affecting the...
Hello, I need help solving the 3 parts of this question.
Part - Factors affecting the dissolution process The rate at which a solute dissolves in a solvent depends on the kinetic energy of the soluton, theme of contact and the surface area of contact between the solute and the solvent particles. Both endothermic and exothermic dissolution processes will respond similarly to each factor, however the charge may be more pronounced depending on the thermodynamic penters of the reaction. As...
Table 1 Factors Affecting Solubility le 1. Identity general trends. Exceptions do sometimes occur, we will leam a...
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...
One mole of sodium chloride is added to 100 ml of water in beaker A. One...
One mole of sodium chloride is added to 100 ml of water in beaker A. One mole of glucose, C_6H_12O_6, is added to 100ml of water in beaker B. How much more will the freezing point of water be lowered in beaker A than in beaker B? Two thirds as much twice as much three times as much Beakers A and B will experience the same degree of freezing point depression. It is impossible to determine. Which of the following...
Question #12 10) The technique of recrystallization involves dissolving a crude solute in a minimum amount...
Question #12
10) The technique of recrystallization involves dissolving a crude solute in a minimum amount of solvent to create a followed by of the solute into a more pure form. A) saturated solution; condensation B) unsaturated solution; evaporation C) supersaturated solution, recrystallization D) concentrated solution; deposition E) dilute solution; reformation 11) 11) Which of the following statements is TRUE? A) In general, the solubility of a gas in water decreases with increasing temperature. B) In general, the solubility of...
Question 8 (4 points) A compound made of elements A and B, has a cubic unit...
Question 8 (4 points) A compound made of elements A and B, has a cubic unit cell. There is an A atom at each corner of the cube and an A atom at the center of each face of the cube. There are four B atoms that lie entirely within the unit cell. Based on this information, the empirical formula for the compound is: ОАВз AB O A₂B AB2 , A₂B2
please help me answer question 1 to 3, thank you Chapter 9, Solutions, Review & Extra Credit. 2 Points for each XC c...
please help me answer question 1 to 3,
thank you
Chapter 9, Solutions, Review & Extra Credit. 2 Points for each XC correct answer; 6 points total, max. Partial Credit given. Suggestions...work in teams [it will improve the learning experience] 1. Solutions-A solution forms when a solute (the smaller quantity) dissolves in a solvent (the larger quantity). In a solution, the particles of solute are evenly distributed in the solvent. A solute may be a gas, liquid or solid. A...
massa volum volum mo olu 5. In which of the following solvents would you expect KBr...
massa volum volum mo olu 5. In which of the following solvents would you expect KBr to be most soluble? a) CH4 (hexane) d) CCM (carbon tetrachloride) b) CH CH OH (ethanol) e) C.Hz (cyclohexane) c) CH. (benzene) ___6. A 9.50 % by mass solution of acetone (C,H,O) in water has a density of 0.9849 g/mL at 20°C. What is the molarity of this solution? a) 0.621 M b) 1.61 Me) 1.66 Md ) 1.71 M e ) 16.9 M...
A solution of ethylene glycol in water at 20 degrees celsius has a mass percent of...
A solution of ethylene glycol in water at 20 degrees celsius has a mass percent of 9.78% of ethylene glycol with a density of 1.0108 g/mL. The freezing point depression constant for water (solvent for all solutions) is Kf=-1.86 percent celsius kg/mol and the boiling point elevation constant is Kb=0.512 degrees celsius kg/mol. The density of neat water at 20.0 degrees celsius is 0.9982 g/mL. Answer the following: 1. What is the molarity of the solution? 2. What is the...
Hello, I need help solving the 3 parts of this question.
Part - Factors affecting the dissolution process The rate at which a solute dissolves in a solvent depends on the kinetic energy of the soluton, theme of contact and the surface area of contact between the solute and the solvent particles. Both endothermic and exothermic dissolution processes will respond similarly to each factor, however the charge may be more pronounced depending on the thermodynamic penters of the reaction. As...
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...
One mole of sodium chloride is added to 100 ml of water in beaker A. One mole of glucose, C_6H_12O_6, is added to 100ml of water in beaker B. How much more will the freezing point of water be lowered in beaker A than in beaker B? Two thirds as much twice as much three times as much Beakers A and B will experience the same degree of freezing point depression. It is impossible to determine. Which of the following...
Question #12
10) The technique of recrystallization involves dissolving a crude solute in a minimum amount of solvent to create a followed by of the solute into a more pure form. A) saturated solution; condensation B) unsaturated solution; evaporation C) supersaturated solution, recrystallization D) concentrated solution; deposition E) dilute solution; reformation 11) 11) Which of the following statements is TRUE? A) In general, the solubility of a gas in water decreases with increasing temperature. B) In general, the solubility of...
Question 8 (4 points) A compound made of elements A and B, has a cubic unit cell. There is an A atom at each corner of the cube and an A atom at the center of each face of the cube. There are four B atoms that lie entirely within the unit cell. Based on this information, the empirical formula for the compound is: ОАВз AB O A₂B AB2 , A₂B2
please help me answer question 1 to 3,
thank you
Chapter 9, Solutions, Review & Extra Credit. 2 Points for each XC correct answer; 6 points total, max. Partial Credit given. Suggestions...work in teams [it will improve the learning experience] 1. Solutions-A solution forms when a solute (the smaller quantity) dissolves in a solvent (the larger quantity). In a solution, the particles of solute are evenly distributed in the solvent. A solute may be a gas, liquid or solid. A...
massa volum volum mo olu 5. In which of the following solvents would you expect KBr to be most soluble? a) CH4 (hexane) d) CCM (carbon tetrachloride) b) CH CH OH (ethanol) e) C.Hz (cyclohexane) c) CH. (benzene) ___6. A 9.50 % by mass solution of acetone (C,H,O) in water has a density of 0.9849 g/mL at 20°C. What is the molarity of this solution? a) 0.621 M b) 1.61 Me) 1.66 Md ) 1.71 M e ) 16.9 M...
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