Q3. Calculate the theoretical density for Zinc of HCP crystal structure, the atomic mass = 65.38 g/mol, and the atomic radius = 0.154 nm.

Q: The boiling points of liquids A and B are 65 °C and 145°C, respectively. Which of these liquids…

A: Given: Boiling point of liquid A = 65 oC And the boiling point of liquid B = 145 oC

Q: Describe the difference between crystalline and amorphous solids?

A:

Q: Identify what type of solids are the following compounds. 1. Li2SO4 2. MgBr2

A: Li2SO4 is lithium sulfate which is an inorganic compound. It is a white color lithium salt of…

Q: Plastics, glass, polymer, and gels are examples of  a. crystaIline solid b. amorphous solids. c.…

A: Plastics, glass, polymer, and gels are examples of  a. crystaIline solid b. amorphous solids. c.…

Q: Under which situations can an amorphous substance change to crystalline form?

A: Crystalline solid is a three dimensional arrangement of a solid in which particle of solid are…

Q: 5.1Gold has a density of 19.32 g/cm3, and the atoms are packed in a face- centered cubic crystal…

A: Note: As per our guidelines, we are supposed to answer only the first question (question number…

Q: calculate density in g cm^-3 - molar mass is 200.5 g.mol - simple cubic lattice - radius of 185 pm

A: Given, The radius of atoms, (r)=185 pm. The edge length of the unit cell, (a)=2r=370 pm=3.70×10-8…

Q: What is the difference between an amorphous solid and a crystalline solid on the macroscopic and…

A: To find: The difference between an amorphous solid and a crystalline solid on the macroscopic and…

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: 5. What is the difference between a crystalline solid and an amorphous solid?

A: Crystalline solids have a definite shape. They have long range order of regular pattern of…

Q: Draw a picture that represents an amorphous solid at the atomic level?

A: The picture which represents amorphous solid at atomic level has to be given.

Q: Which substance is expected to have the LOWEST melting point? Select one: A. HCl B. CO2 C. N2 D.…

A: The temperature at which a substance changes its state from solid to liquid is known as melting…

Q: What kinds of attractive forces exist between particles in (a) molecular crystals; (b)…

A:

Q: 4. Which of the following describes surface tension in water? A. surface tension occurs due to ionic…

A: 4. Surface tension allows water to support small objects if they are placed carefully on its…

Q: Which one of the following substances would be expected to have the weakest intermolecular…

A: Answer

Q: 150 135 120 D E 105 90 75 60 B C 45 30A 15 Heat (kJ) Created by E Lee for Virtual Viginia (2021)…

A: In the given heating curve , each region shows a process and state of the substance.  So first we…

Q: Which of the following solids would be expected to display the highest melting point? O A. KBr O B.…

A: Ionic compound has ionic force, the strongest inter-molecular force. That's why they possess very…

Q: MCQ 5: Tetrachloride with the lowest boiling point is A. SICI, B. CCI C. SnCl, D. PbCl4

A:

Q: Q 3: Represent in the drawing each of [001], [111], (112), (021), (110) for a cubic crystal.

A: Representation of [001], [111], [112], [021], [110] for a cubic crystal system.

Q: 1.11 The crystal structure of sodium chloride (NaCl) is a simple cubic with the Na and Cl atoms…

A:

Q: Question 11 Which of the following substances is correctly matched with the kind of solid it forms?…

A: Ionic solid: ionic solids are formed of cations and anions held together by electrostatic forces.…

Q: 1. What type of crystal will each of the following substances form in its solid state? Choices to…

A: [a.] C2H6 – Covalent [b.] Na2O – Ionic [c.] SiO2 – Covalent [d.] CO2 – Covalent [e.] N2O5 – Covalent…

Q: Which statement explains why metals conduct electricity when solid? A They have atoms which are free…

A: A metal is a substance which shows lusture and are sonorous  They have many physical properties…

Q: 5 Examples of ionic crystals and its crystal structure (ex: scc, bcc, hcp, fcc)

A: Example, scc, fcc, bcc, hcp.

Q: Which substance would have the lowest viscosity? C8H18 C5H12 C12H26 C3H8

A: The viscosity of the liquid is depend upon the intermolecular force . Higher the intermolecular…

Q: Choose the substance with the highest surface tension. Explain your answer. A) HOCH2CH2OH…

A: Explanation to the correct answer is given below

Q: Please Help Me! the last tutor gave me all wrong answers last time. DOUBLE CHECK YOUR ANSWER!!!!

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: GIVE ONE EXAMPLE OF THE FOLLOWING PROCESSESS SUBLIMATION \ MELTING EVAPORATION CONDENSATION FREEZING

A: Sublimation is the process by which a substance makes transition from solid phase to gaseous phase…

Q: Solid thallium(I) chloride has the same kind of crystal structure as CsCl which is pictured below:

A:

Q: Can carbon dioxide be liquefied at room temperature ( 20 °C )? If so, how? If not, why not?

A:

Q: What is the true density of Zr, an HCP crystal, in g/cm3 ? Atomic Number = 40 Atomic Weight = 91.22…

A: Recall the equation d = (Z× Atomic number)/(Na×a3) d= density Z= total no of atoms in  Na= Avogadro…

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: What features can be used to distinguish a crystalline solid from an amorphous solid

A: Crystalline Solids :- The constituent particles are arranged in a regular or defined order. It…

Q: Derive the density of the following compounds from their crystal structures and lattice constants.…

A: The density of the crystal determines different parameters associated with the metal. Knowing the…

Q: Which substance is a liquid at room temperature?a) CH3OH b) CF4 c) SiH4 d) CO2

A: Matter exists in three states- solid, liquid and gaseous. Depending on the type of the attractive…

Q: Choose the substance with the greatest surface tension. A. C12H26 B. C24H50 C. C9H20 D. C6H14

A: Given options are : A. C12H26 B. C24H50 C. C9H20 D. C6H14   Choose the substance with the greatest…

Q: The boiling points of liquids A and B are 65 °C and 145°C, respectively. Which of these liquids…

A: The boiling point is defined as the temperature at which the vapor presure of liquid become equals…

Q: (a) Does the diagram best describe a crystalline solid, a liquid,or a gas? (b) Explain. [Section…

A: Everything that has mass and occupies space are called matter. Matter has different states. Solid,…

Q: 3. Compare and contrast the two types of dlose-packing in solids?

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: The spacing of adjacent atoms in a NaCl crystal is 0.282 nm, and the masses of the atoms are 3.82 ×…

A: Spacing of adjacent atoms,a = 0.282 nm = 2.82 x 10-10 m

Q: 3. In a different universe, a certain very heavy element, "Q", forms a simple cubic solid having a…

A: We will use density expression to calculate atomic mass of Q.

Q: Given that mercury has DeltaHvap of 59.11 kJ/mol and its normal bp is 356.7°C, calculate the vapor…

A:

Q: What is the edge length in pm for a simple cubic with a radius of 145 pm?

A:

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: The boiling points of liquids A and B are 65 C and 145 C respectively. Which of these liquids would…

A:

Q: choose the substance expected to have highest surface tension in liquid phase: a) CH3CH2F b)…

A: Choose the substance expected to have highest surface tension in liquid phase: a) CH3CH2F b)…

Q: Based on the image provided, select the one, or ones, with the least vapor pressure. A & B 275 K A…

A: The pressure exerted by the vapors produced by the evaporating liquid is called vapor pressure.…

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

A: Solution - Sublimation - Sublimation is the transition of a substance directly from the solid to the…

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.