FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 11: Liquids, solids, and Phase Changes

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

How many atoms are in one face-centered cubic unit cell of a metal?

A) 1
B) 2
C) 3
D) 4

Correct Answer

verified

Show Answer

Question 2

Short Answer

Review LaterAdd Note

Review Later

The two most efficiently packed unit cells have the hexagonal closest-packed and the ________ the atomic arrangements.

Correct Answer

verified

cubic closest-packed

Question 3

Multiple Choice

Review LaterAdd Note

Which type of spherical packing has the most unused space?

Which of the following forms an ionic solid?

The magnitude of the heats of vaporization,fusion and sublimation of a substance reflect the

Use the diagram below to answer the following questions. -Melting occurs along the

Which of the following compounds has the highest boiling point?

A crystalline solid of unknown origin forms an aqueous solution that conducts an electrical current.The solid has a high melting point and shatters when struck with a hammer.The solid is likely to be

. -If figure (1) represents the vapor pressure of water at 25°C,which figure represents the vapor pressure of water at 45°C?

The phase diagram of a substance is shown below. -The approximate normal melting point of this substance is

The phase change H₂(g)→ H₂(s)is called ________,and the enthalpy change,ΔH,for this phase change has a ________ sign.

Ethyl chloride,C₂H₅Cl,is used as a local anesthetic.It works by cooling tissue as it vaporizes;its heat of vaporization is 26.4 kJ/mol.How much heat could be removed by 10.0 g of ethyl chloride?

Cubic closest-packing

First-order diffraction of X-rays with d = 154.2 pm at an angle of 32.5° is caused by layers of atoms in a crystalline solid with a spacing of ________ pm.

Of C₂H₅OH and C₃H₅(OH)₃ the one expected to have the higher viscosity is ________,and the one expected to have the higher surface tension is ________.

The temperature and pressure at which all three phases can coexist in equilibrium is

A compound having A ions on each corner and B ions on each face of a cubic unit cell has the empirical formula ________.

Consider a compound that undergoes sublimation at 125°C and a pressure of one atm.Which of the following could be a heating curve appropriate for heating the compound from 100°C to 150°C?

How much heat is released when 95.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol,the enthalpy of fusion for water is 6.01 kJ/mol,the molar heat capacity of liquid water is 75.4 J/(mol ∙ °C) ,and the molar heat capacity of ice is 36.4 J/(mol ∙ °C) .

-If figure (1) represents the vapor pressure of water at 25°C,which figure represents the vapor pressure of ethanol,CH₃CH₂OH at 25°C?