How many moles of solute are in a 0.174 m aspartic acid (C4H7NO4) solution prepared with 250.0 g of water?

A) 6.96 *10-4 mol B) 4.35* 10-2 mol C) 0.696 mol D) 1.44 mol E) 43.5 mol A) 6.96 *10-4 mol B) 4.35* 10-2 mol C) 0.696 mol D) 1.44 mol E) 43.5 mol B

What is the osmotic pressure of a 5.20% mass/volume aqueous ethanol (CH3CH2OH, 46.07 g/mol) solution at 25.0 $\degree$C? Assume the density of the solution is 1.00 g/mL.

A) 2.32 atm B) 27.6 atm C) 2.80 * 103 atm D) 58.6 atm E) 4.91 atm A) 2.32 atm B) 27.6 atm C) 2.80 * 103 atm D) 58.6 atm E) 4.91 atm

A solution is prepared by mixing 75 g of methanol (CH3OH, 32.04 g/mol) with 25 g of ethanol (CH3CH2OH, 46.07 g/mol).What is the mole fraction of ethanol in the vapor phase at 20 $\degree$C?

A) 0.10 B) 0.12 C) 0.19 D) 0.32 E) 0.54 A) 0.10 B) 0.12 C) 0.19 D) 0.32 E) 0.54

What is the osmotic pressure of a 0.0540 M aqueous sodium sulfate (Na2SO4, 142.04 g/mol) solution at 25.0 $\degree$C?

A) 1.32 atm B) 2.64 atm C) 3.96 atm D) 134 atm E) 33.7 atm A) 1.32 atm B) 2.64 atm C) 3.96 atm D) 134 atm E) 33.7 atm

A solution is prepared by mixing 3.50 mL of dichloromethane (CH2Cl2, 84.93 g/mol, 1.33 g/mL) with 3.50 mL of dibromomethane (CH2Br2, 173.8 g/mol, 2.48 g/mL).By what factor is the vapor phase enriched in CH2Cl2 at 25 $\degree$C?

A) 35.3 B) 10.8 C) 2.06 D) 1.77 E) 11.7 A) 35.3 B) 10.8 C) 2.06 D) 1.77 E) 11.7

Exam 11: Properties of Solutions Their Concentrations and Colligative Properties

Suppose 100.0 mL of a 2.50 mM NaCl solution was mixed with 100.0 mL of a 3.40 mM MgCl₂ solution at 25 $\degree$ C.Assuming the volumes are additive and using the ideal van 't Hoff factors, what would be the osmotic pressure of the resulting solution?

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Question 1

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0.186 atm

A 50:50 mixture of cyclohexane (C₆H₁₂, 84.16 g/mol) and toluene (C₆H₅CH₃, 92.14 $\degree$ C) are to be separated by fractional distillation.A plot of temperature versus volume of distillate shows two plateaus, one at 80.7 $\degree$ C and one at 110.6 $\degree$ C.What is the approximate boiling point of each liquid? Use intermolecular forces to justify your answer.

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Question 2

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The boiling point of C₆H₁₂ is probably 80.7 $\degree$ C.It has a lower molar mass, so the strength of the intermolecular forces should be lower.The boiling point of toluene, which is a larger molecule, is probably 110.6 $\degree$ C.

How many moles of solute are in a 0.174 m aspartic acid (C₄H₇NO₄) solution prepared with 250.0 g of water?

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Question 3

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What is the molality of a lithium chloride solution produced by dissolving 14.40 g of LiCl (42.39 g/mol) in water to make 0.104 L of solution with a density of 1.102 g/mL?

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Question 4

What is the boiling point of a solution made by dissolving 25.0 g of powdered sulfur (S₈, 256.52 g/mol) in 250.0 g of carbon disulfide (CS₂, 76.13 g/mol, K_b = 2.37 $\degree$ C/m, T_b = 46.2 $\degree$ C)?

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Question 5

Which of the following regarding colligative properties of a solution is NOT correct?

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Question 6

The Henry's law constant for oxygen dissolving in blood is 3.74 * 10^-2 mol/L . atm at body temperature, 37 $\degree$ C.Calculate the molar concentration of oxygen in blood for a scuba diver where the air pressure is 2.0 atm.The mole fraction of oxygen in air is 0.209.

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Question 7

What is the osmotic pressure of a 5.20% mass/volume aqueous ethanol (CH₃CH₂OH, 46.07 g/mol) solution at 25.0 $\degree$ C? Assume the density of the solution is 1.00 g/mL.

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Question 8

Two solutions, A and B, are separated by a semipermeable membrane.Which of the following statements regarding their tonicities is NOT correct? Assume the same van 't Hoff factor for each solution.

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Question 9

The Henry's law constant for oxygen dissolving in blood is 3.74 *10^-2 mol/L . atm at body temperature, 37 $\degree$ C.Calculate the molar concentration of oxygen in blood for an alpine climber where the atmospheric pressure is 0.45 atm.The mole fraction of oxygen in air is 0.209.

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Question 10

A solution of 5.00 g of lithium chloride in 1.00 kg of water has a freezing point of -0.410 $\degree$ C.What is the actual van 't Hoff factor for this salt at this concentration? (K_f (water) =1.86 $\degree$ C/m)

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Question 11

A solution is prepared by mixing 75 g of methanol (CH₃OH, 32.04 g/mol) with 25 g of ethanol (CH₃CH₂OH, 46.07 g/mol).What is the mole fraction of ethanol in the vapor phase at 20 $\degree$ C? $A solution is prepared by mixing 75 g of methanol (CH3OH, 32.04 g/mol) with 25 g of ethanol (CH3CH2OH, 46.07 g/mol).What is the mole fraction of ethanol in the vapor phase at 20 \degree C?$

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Question 12

A solution contains pentane (C₅H₁₂, 72.15 g/mol) and hexane (C₆H₁₄, 86.17 g/mol) at 25 $\degree$ C, which have vapor pressures of 511 and 150 torr, respectively.To create a solution with a total vapor pressure of 275 torr, approximately how many grams of hexane should be mixed with 50.0 g pentane?

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Question 13

Which of the following statements regarding the phase diagram of water and an aqueous solution is NOT correct? Temperature is on the x-axis; pressure is on the y-axis.

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Question 14

What is the osmotic pressure of a 0.0540 M aqueous sodium sulfate (Na₂SO₄, 142.04 g/mol) solution at 25.0 $\degree$ C?

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Question 15

Myristicin is a hallucinogenic compound found naturally in nutmeg.A 425 mg sample of myristicin was dissolved in 7.800 g of camphor (K_f = 39.7 $\degree$ C/m), decreasing the freezing point of camphor by 11.3 $\degree$ C.What is the molar mass of myristicin?

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Question 16

The concentration unit of molality is symbolized as

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Question 17

The normal boiling point of bromine is 58.8 $\degree$ C, and its enthalpy of vaporization is 30.91 kJ/mol.What is the approximate vapor pressure of bromine at 10.0 $\degree$ C?

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Question 18

Seawater can be characterized by the following average values.What is the molal concentration of ions in seawater? Explain how you arrived at your answer. density = 1.022 g/mL, total mass of ions = 35.17 g/kg concentration of ions =1.15 M

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Question 19

A solution is prepared by mixing 3.50 mL of dichloromethane (CH₂Cl₂, 84.93 g/mol, 1.33 g/mL) with 3.50 mL of dibromomethane (CH₂Br₂, 173.8 g/mol, 2.48 g/mL).By what factor is the vapor phase enriched in CH₂Cl₂ at 25 $\degree$ C? $A solution is prepared by mixing 3.50 mL of dichloromethane (CH2Cl2, 84.93 g/mol, 1.33 g/mL) with 3.50 mL of dibromomethane (CH2Br2, 173.8 g/mol, 2.48 g/mL).By what factor is the vapor phase enriched in CH2Cl2 at 25 \degree C?$

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Question 20

Showing 1 - 20 of 130

Suppose 100.0 mL of a 2.50 mM NaCl solution was mixed with 100.0 mL of a 3.40 mM MgCl₂ solution at 25 $\degree$ C.Assuming the volumes are additive and using the ideal van 't Hoff factors, what would be the osmotic pressure of the resulting solution?

How many moles of solute are in a 0.174 m aspartic acid (C₄H₇NO₄) solution prepared with 250.0 g of water?

What is the molality of a lithium chloride solution produced by dissolving 14.40 g of LiCl (42.39 g/mol) in water to make 0.104 L of solution with a density of 1.102 g/mL?

What is the boiling point of a solution made by dissolving 25.0 g of powdered sulfur (S₈, 256.52 g/mol) in 250.0 g of carbon disulfide (CS₂, 76.13 g/mol, K_b = 2.37 $\degree$ C/m, T_b = 46.2 $\degree$ C)?

Which of the following regarding colligative properties of a solution is NOT correct?

The Henry's law constant for oxygen dissolving in blood is 3.74 * 10^-2 mol/L . atm at body temperature, 37 $\degree$ C.Calculate the molar concentration of oxygen in blood for a scuba diver where the air pressure is 2.0 atm.The mole fraction of oxygen in air is 0.209.

What is the osmotic pressure of a 5.20% mass/volume aqueous ethanol (CH₃CH₂OH, 46.07 g/mol) solution at 25.0 $\degree$ C? Assume the density of the solution is 1.00 g/mL.

Two solutions, A and B, are separated by a semipermeable membrane.Which of the following statements regarding their tonicities is NOT correct? Assume the same van 't Hoff factor for each solution.

The Henry's law constant for oxygen dissolving in blood is 3.74 *10^-2 mol/L . atm at body temperature, 37 $\degree$ C.Calculate the molar concentration of oxygen in blood for an alpine climber where the atmospheric pressure is 0.45 atm.The mole fraction of oxygen in air is 0.209.

A solution of 5.00 g of lithium chloride in 1.00 kg of water has a freezing point of -0.410 $\degree$ C.What is the actual van 't Hoff factor for this salt at this concentration? (K_f (water) =1.86 $\degree$ C/m)

Which of the following statements regarding the phase diagram of water and an aqueous solution is NOT correct? Temperature is on the x-axis; pressure is on the y-axis.

What is the osmotic pressure of a 0.0540 M aqueous sodium sulfate (Na₂SO₄, 142.04 g/mol) solution at 25.0 $\degree$ C?

Myristicin is a hallucinogenic compound found naturally in nutmeg.A 425 mg sample of myristicin was dissolved in 7.800 g of camphor (K_f = 39.7 $\degree$ C/m), decreasing the freezing point of camphor by 11.3 $\degree$ C.What is the molar mass of myristicin?

The concentration unit of molality is symbolized as

The normal boiling point of bromine is 58.8 $\degree$ C, and its enthalpy of vaporization is 30.91 kJ/mol.What is the approximate vapor pressure of bromine at 10.0 $\degree$ C?

Seawater can be characterized by the following average values.What is the molal concentration of ions in seawater? Explain how you arrived at your answer. density = 1.022 g/mL, total mass of ions = 35.17 g/kg concentration of ions =1.15 M

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Intermolecular Forces Attractions Between Particles

Stoichiometry Mass Relationships and Chemical Reactions

Aqueous Solutions Chemistry of the Hydrosphere

Thermochemistry Energy Changes in Chemical Reactions

Properties of Gases the Air We Breathe

Thermodynamics Why Chemical Reactions Happen

Chemical Kinetics Clearing the Air

Chemical Equilibrium Equal but Opposite Reaction Rates

Acid-Base Equilibria Proton Transfer in Biological Systems

Additional Aqueous Equilibria Chemistry and the Oceans

Electrochemistry the Quest for Clean Energy

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Exam 11: Properties of Solutions Their Concentrations and Colligative Properties

Suppose 100.0 mL of a 2.50 mM NaCl solution was mixed with 100.0 mL of a 3.40 mM MgCl2 solution at 25 °\degree° C.Assuming the volumes are additive and using the ideal van 't Hoff factors, what would be the osmotic pressure of the resulting solution?

How many moles of solute are in a 0.174 m aspartic acid (C4H7NO4) solution prepared with 250.0 g of water?

What is the molality of a lithium chloride solution produced by dissolving 14.40 g of LiCl (42.39 g/mol) in water to make 0.104 L of solution with a density of 1.102 g/mL?

What is the boiling point of a solution made by dissolving 25.0 g of powdered sulfur (S8, 256.52 g/mol) in 250.0 g of carbon disulfide (CS2, 76.13 g/mol, Kb = 2.37 °\degree° C/m, Tb = 46.2 °\degree° C)?

Which of the following regarding colligative properties of a solution is NOT correct?

The Henry's law constant for oxygen dissolving in blood is 3.74 * 10-2 mol/L . atm at body temperature, 37 °\degree° C.Calculate the molar concentration of oxygen in blood for a scuba diver where the air pressure is 2.0 atm.The mole fraction of oxygen in air is 0.209.

What is the osmotic pressure of a 5.20% mass/volume aqueous ethanol (CH3CH2OH, 46.07 g/mol) solution at 25.0 °\degree° C? Assume the density of the solution is 1.00 g/mL.

Two solutions, A and B, are separated by a semipermeable membrane.Which of the following statements regarding their tonicities is NOT correct? Assume the same van 't Hoff factor for each solution.

The Henry's law constant for oxygen dissolving in blood is 3.74 *10-2 mol/L . atm at body temperature, 37 °\degree° C.Calculate the molar concentration of oxygen in blood for an alpine climber where the atmospheric pressure is 0.45 atm.The mole fraction of oxygen in air is 0.209.

A solution of 5.00 g of lithium chloride in 1.00 kg of water has a freezing point of -0.410 °\degree° C.What is the actual van 't Hoff factor for this salt at this concentration? (Kf (water) =1.86 °\degree° C/m)

A solution is prepared by mixing 75 g of methanol (CH3OH, 32.04 g/mol) with 25 g of ethanol (CH3CH2OH, 46.07 g/mol).What is the mole fraction of ethanol in the vapor phase at 20 °\degree° C?

Which of the following statements regarding the phase diagram of water and an aqueous solution is NOT correct? Temperature is on the x-axis; pressure is on the y-axis.

What is the osmotic pressure of a 0.0540 M aqueous sodium sulfate (Na2SO4, 142.04 g/mol) solution at 25.0 °\degree° C?

Myristicin is a hallucinogenic compound found naturally in nutmeg.A 425 mg sample of myristicin was dissolved in 7.800 g of camphor (Kf = 39.7 °\degree° C/m), decreasing the freezing point of camphor by 11.3 °\degree° C.What is the molar mass of myristicin?

The concentration unit of molality is symbolized as

The normal boiling point of bromine is 58.8 °\degree° C, and its enthalpy of vaporization is 30.91 kJ/mol.What is the approximate vapor pressure of bromine at 10.0 °\degree° C?

Seawater can be characterized by the following average values.What is the molal concentration of ions in seawater? Explain how you arrived at your answer. density = 1.022 g/mL, total mass of ions = 35.17 g/kg concentration of ions =1.15 M

A solution is prepared by mixing 3.50 mL of dichloromethane (CH2Cl2, 84.93 g/mol, 1.33 g/mL) with 3.50 mL of dibromomethane (CH2Br2, 173.8 g/mol, 2.48 g/mL).By what factor is the vapor phase enriched in CH2Cl2 at 25 °\degree° C?

Matter and Energy an Atomic Perspective

Atoms, Ions, and Molecules the Building Blocks of Matter

Atomic Structure Explaining the Properties of Elements

Chemical Bonding Understanding Climate Change

Bonding Theories Explaining Molecular Geometry

Intermolecular Forces Attractions Between Particles

Stoichiometry Mass Relationships and Chemical Reactions

Aqueous Solutions Chemistry of the Hydrosphere

Thermochemistry Energy Changes in Chemical Reactions

Properties of Gases the Air We Breathe

Thermodynamics Why Chemical Reactions Happen

Chemical Kinetics Clearing the Air

Chemical Equilibrium Equal but Opposite Reaction Rates

Acid-Base Equilibria Proton Transfer in Biological Systems

Additional Aqueous Equilibria Chemistry and the Oceans

Electrochemistry the Quest for Clean Energy

The Solid State a Particulate View

Organic Chemistry Fuels, Pharmaceuticals, and Modern Materials

Biochemistry the Compounds of Life

Nuclear Chemistry the Risks and Benefits

The Main Group Elements Life and the Periodic Table

Transition Metals Biological and Medical Applications

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Suppose 100.0 mL of a 2.50 mM NaCl solution was mixed with 100.0 mL of a 3.40 mM MgCl₂ solution at 25 $\degree$ C.Assuming the volumes are additive and using the ideal van 't Hoff factors, what would be the osmotic pressure of the resulting solution?

How many moles of solute are in a 0.174 m aspartic acid (C₄H₇NO₄) solution prepared with 250.0 g of water?

What is the boiling point of a solution made by dissolving 25.0 g of powdered sulfur (S₈, 256.52 g/mol) in 250.0 g of carbon disulfide (CS₂, 76.13 g/mol, K_b = 2.37 $\degree$ C/m, T_b = 46.2 $\degree$ C)?

The Henry's law constant for oxygen dissolving in blood is 3.74 * 10^-2 mol/L . atm at body temperature, 37 $\degree$ C.Calculate the molar concentration of oxygen in blood for a scuba diver where the air pressure is 2.0 atm.The mole fraction of oxygen in air is 0.209.

What is the osmotic pressure of a 5.20% mass/volume aqueous ethanol (CH₃CH₂OH, 46.07 g/mol) solution at 25.0 $\degree$ C? Assume the density of the solution is 1.00 g/mL.

The Henry's law constant for oxygen dissolving in blood is 3.74 *10^-2 mol/L . atm at body temperature, 37 $\degree$ C.Calculate the molar concentration of oxygen in blood for an alpine climber where the atmospheric pressure is 0.45 atm.The mole fraction of oxygen in air is 0.209.

A solution of 5.00 g of lithium chloride in 1.00 kg of water has a freezing point of -0.410 $\degree$ C.What is the actual van 't Hoff factor for this salt at this concentration? (K_f (water) =1.86 $\degree$ C/m)

What is the osmotic pressure of a 0.0540 M aqueous sodium sulfate (Na₂SO₄, 142.04 g/mol) solution at 25.0 $\degree$ C?

Myristicin is a hallucinogenic compound found naturally in nutmeg.A 425 mg sample of myristicin was dissolved in 7.800 g of camphor (K_f = 39.7 $\degree$ C/m), decreasing the freezing point of camphor by 11.3 $\degree$ C.What is the molar mass of myristicin?

The normal boiling point of bromine is 58.8 $\degree$ C, and its enthalpy of vaporization is 30.91 kJ/mol.What is the approximate vapor pressure of bromine at 10.0 $\degree$ C?