27. Please define the terms of sublimation and crystallization and give examples for each concept.

Q: Many heat-sensitive and oxygen-sensitive solids, such ascamphor, are purified by warming under…

A: The purification process of camphor involves warming under vacuum. In this process, solid directly…

Q: What type of crystalline solid do youpredict would best suit the following needs?a. a material that…

A: The types of crystalline solid which suits the given statements has to be predicted.

Q: Both solid Kr and solid Cu consist of individual atoms. Why do their physical properties differ so…

A: INTRODUCTION: Solid has definite shape and volume.It is a type of matter that has ordered…

Q: Polonium crystallizes with a simple cubic structure. It has a den- sity of 9.3 g/cm, a radius of 167…

A: Given: Density = 9.3 g/cm3 Radius= 167 pm Molar mass= 209 g/mol To find: The value of Avogadro's…

Q: Of the five major types of crystalline solid, which does each of the following form, and why: (a)…

A: ANSWER

Q: Ammonia can be liquefied by compression at room temperature; oxygen cannot be liquefied under these…

A: The critical temperature of a substance is defined as the maximum temperature at which the substance…

Q: The normal boiling and freezing points of argon are 87.3 K and 84.0 K, respectively. The triple…

A: Given information,    Boiling point of argon is 87.3 K    Freezing point of argon is 84.0 K    The…

Q: 11.) A) Which would have a greater melting point, (a) or (b)? Explain. B) Which would have a greater…

A: The melting point is defined as the temperature which is required to melt solid substances. It…

Q: Of the five major types of crystalline solid, which does eachof the following form, and why: (a) Ni;…

A: a) Generally, the solids are classified into 5 types on the basis of the type of particle.

Q: At room temperature, F2 and Cl2 are gases, Br2 is a liquid, and I2 is solid. This is because of…

A: At room temperature, F2 and Cl2 are gases, Br2 is a liquid, and I2 is solid because

Q: In a crystalline solid anions ‘C’ are arranged in cubic close packing, cations ‘A’ occupy 50% of…

A:

Q: The enthalpy of vaporization of Substance X is 16.0kJmol and its normal boiling point is 123.°C.…

A: We have to Calculate the vapor pressure of X at −35°C.

Q: The phase diagram for carbon is shown.

A: Triple point is considered to be tgat point where 3 phases exist together in the phase diagram

Q: From the data below, calculate the total heat (in J) needed to convert 30.00 g of ice at −4.50°C to…

A: Given m.p. at 1 atm: 0.0°C   ΔH°fus : 6.02 kJ/mol c liquid:  4.184 J/g ·°C   csolid: 2.09…

Q: What amount of heat (in kJ) is required to convert 19.1 g of an unknown solid (MM = 83.21 g/mol) at…

A: We have to calculate the amount of heat needed.

Q: crystallography

A: In X-ray crystallography, we used Bragg's law to identify the lattices parameters of crystal system.…

Q: 1. In crystal growth, what is the purpose of the seed crystal? 2. What is the importance of leaving…

A: Q1) Seed crystals are the small crystals. The purpose of seed crystals is to grow a large crystal.…

Q: efer to the diagram below. 2. What are the necessary conditions for this material to sublime? How…

A: Sublimation is when a material changes from a solid state to a gaseous state without passing through…

Q: It often happens that a substance possessing a smectic liquid crystalline phase just above the…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: What amount of heat (in kJ) is required to convert 19.5 g of an unknown solid (MM = 83.21 g/mol) at…

A:

Q: What amount of heat (in kJ) is required to convert 21.4 g of an unknown solid (MM = 67.44 g/mol) at…

A: Mass of Unknown solid = 21.4 g = MMolar mass of Unknown solid = 67.44 g/moleNo of moles of Unknown…

Q: What is the relationship between density and crystal structure?

A: To find: Relationship between density and crystal structure.

Q: The smectic liquid crystalline phase can be said to be morehighly ordered than the nematic phase. In…

A: The smectic liquid crystalline phase can be said to be more highly ordered than the nematic because…

Q: () There are 7 crystal systems, 2 of them are predominant in metals, which are the two?

A: There are seven crystal systems- 1) Cubic 2) Tetragonal 3) Orthorhombic 4) Hexagonal 5) Rhombohedral…

Q: From the data below, calculate the total heat (in J) needed to convert 22.00 g of ice at 6.00°C to…

A: T convert the ice at -6°C to liquid water at 0.5°C, we need to follow the process as; Heat the ice…

Q: 4. List types of crystal imperfections, give their dimensionality and examples.

A: The crystalline nature of the substances acquires their constituent particles/atoms in the proper…

Q: 5. How can a gas at room temperature (like oxygen) become solid?

A: Phase changes when temperature and pressure is changed.

Q: What amount of heat (in kJ) is required to convert 20.0 g of an unknown solid (MM = 83.21 g/mol) at…

A: Given Molecular weight of solid = 83.21g/mol Mass = 20g specific heat capacity of solid = 2.39…

Q: Please define the terms of sublimation and crystallization and give examples for each concept

A: A question based on introduction to chemistry that is to be accomplished.

Q: The vapor pressure of a liquid doubles when the temperature is raised from 91°C to 99°C. At what…

A: In this question we have calculated the temperature on increasing the pressure to six times to value…

Q: Calculate the total heat required in the heating and complete melting of 1.00 mol solid Cu (MM =…

A:

Q: What amount of heat (in kJ) is required to convert 30.0 g of an unknown solid (MM = 67.44 g/mol) at…

A:

Q: What amount of heat (in kJ) is required to convert 19.1 g of an unknown solid (MM = 83.21 g/mol) at…

A: Given data: The specific heat capacity of the solid = 2.39 J/g.oC The specific heat capacity of the…

Q: 36. The melting point and boiling point of a substance is 70 °C and 450 °C respectively; its…

A: For the transformation of solid to gas, the heat required in the following process :      1)…

Q: A type of alloy is a homogeneous solid mixture of metals and melts at a distinct temperature. What…

A: Alloy are the homogeneous mixture of metal - metal or non metal - non metal. Alloy usually have high…

Q: 1. Standard state and Intermolecular (IM) forces. o Draw two Lewis structures of the molecule.…

A: This question is completely based on theory portion and we have to elaborate the term intermolecular…

Q: What is the heat of vaporization(kj/mol) if it takes 3452 J of heat to completely vaporize 2.68…

A: Consider the given information is as follows; Heat of vaporization = 3452 J = 34521000 kJ=3.452 kJ…

Q: Describe the major features of the phase diagram?

A: The major features of a phase diagram is, They are phase boundaries and they have triple point. This…

Q: Chemistry help

A: Clausius Clapeyron equation-This gives relation between pressure and temperature if enthalpy of…

Q: What amount of heat (in kJ) is required to convert 15.5 g of an unknown solid (MM = 83.21 g/mol) at…

A: Solution - According to the question - Given values - Number of moles = 15.5/83.21 = 0.186 moles…

Q: Why is the Boiling point of Calcium higher than that of Magnesium?

A: The question is based on the concept of boiling point. it is defined as the temperature at which the…

Q: Sodium sulfate (Na2SO4) crystallizes in the orthorhombic system in a unit cell with a = 5.863 Å, b=…

A: The orthorhombic system is one of the seven crystal lattices and is characterized by edge length and…

Q: What amount of heat (in kJ) is required to convert 17.2 g of an unknown solid (MM = 83.21 g/mol) at…

A: Given data mass of solid : m=17.2 g molar mass : MM=83.21 g/mole Initial temperature : T1=-5.00°C…

Q: State two molecular characteristics of substances that typ-ically form liquid crystals. How is each…

A: Given: To determine the two molecular characteristics of substances that typically form liquid…

Q: 10) Assume that boron is used to dope silicon. If boron dopant concentration uniform and has a value…

A:

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.