Polarity
The molecular geometry and polarity (polar or nonpolar) of CF4.
What is tetrahedral and nonpolar?
The only intermolecular force between two non-polar molecules, but are present between all molecules.
What are Dispersion Forces?
Another word for fusion.
What is melting?
A supersaturated solution contains ____ than the equilibrium amount of solute.
What is more?
When a change in thermal energy occurs from a liquid to solid state, the enthalpy of fusion is this.
What is negative?
The molecular geometry and polarity (polar or nonpolar) of SO2.
What is bent and polar?
The strongest intermolecular force present in NH3.
What is hydrogen bonding?
Enthalpy of fusion generally _____ with increasing strength of intermolecular forces.
What is increases?
An _____ solution contains less than the equilibrium amount of solute.
What is unsaturated?
Calculate the change in thermal energy in kJ for a 234.5 g sample of acetone (molar mass = 58.08 g/mol) to change from -20.59°C to 119.95°C. Give your answer to 3 significant figures.
Enthalpy of fusion: 5.73 kJ/mol
Enthalpy of vaporization: 31.3 kJ/mol
Melting point: -94.7°C
Boiling point: 56.1°C
Specific heat capacity (solid): 1.65 J/(g·°C)
Specific heat capacity (liquid): 2.16 J/(g·°C)
Specific heat capacity (gas): 1.29 J/(g·°C)
What is 185 kJ?
The molecular geometry and polarity (polar or nonpolar) of XeF4.
What is square planar and nonpolar?
The strongest intermolecular force present in LiBr (aq).
What is ion-dipole?
An ice cube slowly disappearing from an ice cube tray in a freezer is an example of this.
What is sublimation?
An aqueous solution is 36% NaBr by mass. Calculate the molarity of the solution. The density of the solution is 1.15 g/mL. Give your answer to 3 significant figures.
What is 4.02 M NaBr?
Determine the vapor pressure in psi of a substance at 89.8°C if its normal boilng point is 128.5°C and its enthalpy of vaporization is 64.6 kJ/mol. Give your answer to 3 significant figures. 1 atm = 14.7 psi
What is 1.87 psi?
The molecular geometry and polarity (polar or nonpolar) of BeF2.
What is linear and nonpolar?
Intermolecular forces are ______ molecules; bonds are ______ molecules.
What is between and within?
Heating a liquid in a closed container until its temperature is beyond the critical temperature produces this.
What is supercritical fluid?
An aqueous solution is 0.725 m C6H12O6. Calculate the percent C6H12O6 by mass in this solution. Give your answer to 3 significant figures.
What is 11.6%?
Calculate the change in thermal energy in kJ for a 547.3 g sample of acetone (molar mass = 58.08 g/mol) to change from 21.05°C to -138°C. Give your answer to 3 significant figures.
Enthalpy of fusion: 5.73 kJ/mol
Enthalpy of vaporization: 31.3 kJ/mol
Melting point: -94.7°C
Boiling point: 56.1°C
Specific heat capacity (solid): 1.65 J/(g·°C)
Specific heat capacity (liquid): 2.16 J/(g·°C)
Specific heat capacity (gas): 1.29 J/(g·°C)
What is -230 kJ?
The molecular geometry and polarity (polar or nonpolar) of XeF2.
What is linear and nonpolar?
The strongest intermolecule force present in CH3CHO.
What is dipole-dipole?
Fusion is an _______ process, so the enthalpy of fusion is _______.
What is endothermic and positive?
An aqueous solution is 21% NaNO3 by mass. Calculate the molarity of the solution. The density of the solution is 1.28 g/mL. Give your answer to 3 significant figures.
What is 3.16 M NaNO3?
Determine the boiling point in °C of a liquid at an external pressure of 472 torr if its normal boiling point is 72.9°C and its enthalpy of vaporization is 43.30 kJ/mol. Give your answer to 3 significant figures. 1 atm = 760 torr
What is 62.3°C?