9.Amorphous silica, SiO2, has a density of about 2.2 g/cm?, whereas the density of crystalline quartz is 2.65 g/cm3. Account for this differencein densities.10. The unit cell of nickel arsenide is shown below. (a)What type of lattice does this crystal possess? (b) What is the empirical formula?-3.57 Å120side viewtop viewNiAs- 5.10 Å-F3.57 Å→

Answer - The amorphous material has less density then the crystalline material because the amorphous…

Answered: 9. Amorphous silica, SiO2, has a…

9. Amorphous silica, SiO2, has a density of about 2.2 g/cm³, whereas the density of crystalline quartz is 2.65 g/cm³. Account for this difference in densities.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Calculate the mass of aluminum metal that is needed to produce Cr metal from 5.00 × 10² g of…

A: Solution- The Chromium metal is extracted from the Chromite ore by the following reaction 3Fe2CrO4…

Q: s of an unknown crystalline substance showed that it is hard, has a high melting point, and is…

A: The compound is hard, has a high melting point, and is non-conducting unless melted means it shows…

Q: A feldspar sample was analyzed. In the analysis of 0.4270-g sample, a mixture of KCl and NaCl is…

Q: <p>Metal elements are found in both minerals and ores. Describe the difference between a…

A: Mineral is a naturally occurring inorganic compound that has characteristic composition and crystal…

Q: What is the correct structural form for the silicate BaTi(Si3O9)? Select one: a. amphibole (double…

A: Given compound BaTi(Si3O9).

Q: Write some advantages and disadvantages of ceramic materials compared to metals?

A: Metal is a very broad term in itself but in general metals are those chemical elements that are…

Q: Silicon has a face-centred cubic structure with two atoms per lattice point, just like diamond. At…

A: Given : a = 543.1 pm

Q: Describe the difference between vitreous silica and soda-lime glass.

A: Soda lime-glass is also known as soda lime silica glass. It contains 70% of SiO2 along with CaO and…

Q: If a small amount of CaO is added to an otherwise mostly silica glass, what will happen to the…

A: Silica glass, primarily composed of silicon dioxide (SiO2), has a complex three-dimensional network…

Q: Find the density and IPF values for cristobalite. (Si4+ ion radius: 0.039 nm, O2- ion radius:…

A: In case of Cristobalite, the structure is Si4O8. 3a/4 = (0.039 + 0.132) nm = 0.171 nm. a =…

Q: Pyrite and Diamond are: two polymorphic minerals two cubic minerals two silicate minerals two…

A: Minerals having the same chemical composition, but different crystal structures are known as…

Q: The Martial regolith is about 45.5% SiO2. Draw the VSEPR structure of SiO2. Also give the name of…

A: Structure of SiO2:

Q: What do granite and basalt have in common?

A: Granite and Basalt are two of the major rocks found in the earth crust.

Q: how many iron atoms are in a mold of this alloy

Q: 2. Calculate the composition in weight percent of an alloy that contains 200kg of Fe, 400 gm of C…

A: Here we are required to calculate the composition in weight percent of an alloy which contains…

Q: First, identify the reactions taking place. Look at the reagents over the arrows. What is the first…

A: 1. With 1st reaction, OH Group reacts with Tscl,Pyridine. It becomes OTS. Then OTS group is good…

Q: 2 V2O5 + 5 Si → 4 V + 5 SiO2 Given the above balanced equation, calculate the number of grams…

Q: Draw a structure consisting of SiO4 units arranged in a chain with each unit sharing two of its…

A: Silicates are compounds of silicon and oxygen with a basic unit of [SiO44-] Silicates are of…

Q: Which of the following is an example of an alloy? A B C D steel salt water air iron

A: Alloy — alloy is mixture of two or metals. Example — bronze.

Q: How are the silica tetrahedrons linked for ZrSiO4? Which class of silicates does this compound…

A: The way how silica tetrahedrons linked for ZrSiO4 are shown as follows,

Q: What are some of the structural differences between quartz and amorphous SiO2?

A: A question based on solid state, which is to be accomplished.

Q: Explain magnesium oxide (MgO) process in detail.

A: Explain magnesium oxide (MgO) process in detail.

Q: Which is a metal alloy? O Steel O Diamond O Glasses O Limestone

Q: How can you separate alumina (Al2O3) from silica present in bauxite ore? Write the chemical…

A: Filtering of aluminum from bauxite: Finely powdered bauxite metal is processed with a watery…

Q: mineralization

A: Organic substance + O2 → CO2 + H2O

Q: Why does silica operate at highly temperature

A: Silica is widely used in industry. Since it can withstand high temperature.

Q: <p>Explain why the graphite structure of carbon allows graphite to be used as a lubricant, but…

A: In graphite, flat sheets of carbon are connected together in the form of interconnected hexagonal…

Q: Silica is utilized in the manufacture of the central processing unit (CPU) chip used in computers.

A: Silicon is used because it can be used as either an insulator (doesn't allow electricity to flow) or…

Q: Which alloy is a combination of metal and non-metal? Steel O Bronze O Solder O Brass

A: Alloy having combination of metal and non metal ?

Q: 2 V2O5 + 5 Si → 4 V + 5 SiO2 Given the above balanced equation, calculate the number of grams…

Q: The production of high-grade iron from hematite and magnetite using a blast furnace involves several…

A: The production of high-grade iron from hematite and magnetite using a blast furnace involves several…

Q: Apatite is a main mineral source for the production of phosphorus. Calculate the atomic and mass…

A: Molar weight of apatite = 509.2 g/molMass of phosphorus = 123.88 g/mol

Q: Identify the crystal structure of all metals. Assign a symbol on each crystal structure type…

A: The objective of this question is to show the crystal structure of metals plays a crucial role in…

Q: <p>Why is Ni not considered a common metal even though it composes over 2% of the total mass…

A: The reason for nickel cannot be considered as common metal is given in step two.

Q: What names are given to SiO2 when it exists in the following two solid-state forms? Amorphous Solid…

A: The correct answer about SiO2 is given below

Concept explainers

Group 14 Elements

The following elements come under group 14 of the periodic table.

Question

9.
Amorphous silica, SiO2, has a density of about 2.2 g/cm?, whereas the density of crystalline quartz is 2.65 g/cm3. Account for this difference
in densities.
10. The unit cell of nickel arsenide is shown below. (a)What type of lattice does this crystal possess? (b) What is the empirical formula?
-3.57 Å
120
side view
top view
Ni
As
- 5.10 Å-
F3.57 Å→

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

What is the difference between substituted aluminum in silicates and adding sodium as modifier in glasses?
<p>Describe why bronze was one of the first alloys that humans used.
How many of these elements would be able to bond with the silica tetrahedra SiO4 - molecules? Group of answer choices are A = 4 B = 2 c = 1 Match it to the correct element. Na+ (sodium) Mg2 + (magnesium) Fe 2 + (iron) Fe 3 + (iron) Al 3 + (aluminum) Ca 2 + (calcium) K+ (potassium) |
What are the various phases of SiO2?
>Explain why metals such as Au and Ag are found in their elemental states in nature, but metals like Na and Ca are always found in compounds in nature.
Give four examples of non-silicate minerals, and describe each example’s characteristic features
23. Molybdenum has a BCC crystal structure, an atomic radius of 0.1363 nm, and an atomic weight of 95.94 g/mol. The theoretical density.is O11.21 g/cm3 O 12.21 g/cm3 O 13.21 g/cm3 O 10.21 g/cm3
Why the semiconducting properties of silicon are improved by adding minute amounts of boron?
If 55 g of SiO2 glass is placed into 111 L of 0.032 M HF, is there enough HF to dissolve all of the glass? Determine which substance is the limiting reagent and calculate how much of the other reagent is left if the reaction proceeds to completion.
The density of platinum is 21.45 g/cm3. It crystallizes in a fcc lattice. Calculate its metallic radius.
In the following statements, select the correct statement : A. N(CH3)3 has pyramidal structure. B. N(SiH3)3 shows planar arrangement. C. SiC is highly volatile. D. SiO2 is called silane.