At 4.2 K and Helium is a liquid . What intermolecular interactions are responsible for the...

At 4.2 K and Helium is a liquid . What intermolecular interactions are responsible for the condensation of He ?

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queen_honey_blossom answered 2 years ago

Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 3.00-L metal...

Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 3.00-L metal bottle that contains air at 99K and 3.0 atm pressure is sealed off. If we inject 130.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle?

Explain what happens to liquid helium at standard pressure and 2.2 K using BE statistical mechanics.

What intermolecular interactions will exist between molecules in a mixture of ethanol and acetone in solution?...

What intermolecular interactions will exist between molecules in a mixture of ethanol and acetone in solution? Select all possible answers -Hydrogen bonding -dipole-dipole interactions -dispersion (van der Waal) interactions -No intermolecular interactions between these molecules.

What is the predominant intermolecular force in the liquid state of each of these compounds: ammonia...

What is the predominant intermolecular force in the liquid state of each of these compounds: ammonia (NH3), carbon tetrachloride (CCl4), and hydrogen sulfide (H2S)? Drag the appropriate items to their respective bins.

Intermolecular interactions are important in the formation of crystals, since they control the orientation of adjacent...

Intermolecular interactions are important in the formation of crystals, since they control the orientation of adjacent molecules. Which of the following is not considered an intermolecular force for directing crystal growth? 1. hydrogen bonding 2. van der Waals forces 3. molecular dipole moments 4. atomic polarizability Long-range organization of molecules in the organic solid state generally results in compounds that 1. are generally crystalline 2. are generally amorphous 3. give broad melting points 4. are electronically neutral

true or False: a) Intermolecular interactions are small for ideal solutions * b) For component B...

true or False: a) Intermolecular interactions are small for ideal solutions * b) For component B in an ideal solution μB is always less than μB* c) ΔGmix < 0 always for ideal solutions

4. In terms of intermolecular interactions, try to account for the differences in melting point between...

4. In terms of intermolecular interactions, try to account for the differences in melting point between salicylic acid (mp 158.6°C) and acetanilide (mp 114.3°C). 5. Isobutyric acid has a solubility in water (at 25°C) about one‐third of its solubility in diethyl ether; thus Kd = 3.0. Imagine 4.0 g of isobutyric acid dissolved in a mixture of 35.0 ml of diethyl ether and 100.0 ml of water. a) What weight of acid is in each layer at equilibrium after an...

Match the following properties of liquids to what they indicate about the relative strength of the intermolecular forces in that liquid.

Match the following properties of liquids to what they indicate about the relative strength of the intermolecular forces in that liquid.Strong intermolecular forces: Weak intermolecular forces:-high boiling point-high vapor pressure-high surface tension-high viscosity

Lecture 3. Intermolecular interactions Describe different types of van der Waals forces What properties of water...

Lecture 3. Intermolecular interactions Describe different types of van der Waals forces What properties of water are differing it from other common liquids? What is the cause of unique properties of water? What are water clusters and why are they called “flickering clusters”? What is water temperature anomaly? What is hydration of the first order and what is hydration of the second order? What are the changes of entropy in the process of conformational changes of organic macromolecules? What are...

A balloon filled with helium has a volume of 37.7 L at 299 K. What volume...

A balloon filled with helium has a volume of 37.7 L at 299 K. What volume will the balloon occupy at 267 K?

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