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Intermolecular Forces and Physical Properties

Q. The molar heat of fusion of sodium metal is 2.60 kj/mol, whereas its heat of vaporization is 97 kJ/mol. A) Why is the heat of vaporization so much larger than the heat of fusion? a)Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a liquid, it requirs much more energy. b)Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a liquid, it requirs much less energy. c)Since conversion from a solid to a liquid breaks many more intermolecular forces than conversion from a liquid to a gas, it requires much more energy. d)Since convversion from a solid to a liquid breaks many more intermolecular forces than converssion from a liquid to a gas, it requires much less energy. e) Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a gas, it requires muhc less energy. B) What quantity of heat would be needed to melt 1.00 g sodium at its normal melting point? Heat= --- J

Solved • Aug 23, 2019

Clausius-Clapeyron Equation

Q. Carbon tetrachloride, CCl4, has a vapor pressure of 213 torr at 40 degree Celcius and 971 torr at 85 degree C. what is the normal boiling point of CCl4? Boiling point= ---- degree C?

Solved • Aug 23, 2019

Intermolecular Forces and Physical Properties

Q. This question has multiple parts. Work all the parts to get the most points. A) predict which of the following substance would have the highest freezing point? HF, Nacl, H2O. ​B) Predict which of the following substances would have the highest boiling point. Cl2, Kr, HBr.

Solved • Aug 23, 2019

Intermolecular Forces

Q. This question has multiple parts. Work all the parts to get the most points. A)Predict which substance in the following pair would have the greater intermolecular forces. CH3OCH3, CH3CH2OH B)Predict which substance in the following pair would have the greater intermolecular forces. SO2, SeO2

Solved • Aug 23, 2019

The Ideal Gas Law

Q. 14. The atmosphere on mars is composed mainly of carbon dioxide. The surface temperature is 220 K and the atmospheric pressure is about 6.0mmHg. Taking these values as martian "STP," calculate the molar volume in liters of an ideal gas on Mars.

Solved • Aug 23, 2019

Dimensional Analysis

Q. 355 km/s to cm/s

Solved • Aug 23, 2019

Ksp

Q. The solubility product of lead(II)sulfide is KL= 3 x 10^-28 mol^2/L^2 How many grams of Pbs are soluble in 10 L of water?

Solved • Aug 23, 2019