Explain the unit cells must have the same types of atoms

Assignment Help Chemistry
Reference no: EM13497473

It is stated that more than one unit cell can be chosen for a structure. If they represent the same structure, however, the unit cells must have the same types of atoms (with the same stoichiometic relationships between them, i.e. the same formula) and the same coordination geometry around each type of atom. The following are two representations that have been used for the perovskite (a mineral) structure. Do they represent identical sturctures? Explain why or why not.

Reference no: EM13497473

Questions Cloud

Prepare the unadjusted trial balance on the worksheet : Prepare the unadjusted trial balance on the worksheet and complete the worksheet for the year ended December 31, 2012, using the adjustment data
Find how long does it take motor to make one revolution : Some bacteria are propelled by biological motors that spin hair-like flagella. How long does it take the motor to make one revolution
What is the energy of the subsequent oscillations : A string of length L, which is clamped at both ends and has a tension T, is pulled aside a distance h at its center and released. What is the energy of the subsequent oscillations
Explain different arrangements of the circles can lead : Different arrangements of the circles can lead to different packing efficiencies. Arrange 9 pennies or circles such that the unit cell is now a hexagon around the center coin. This is called the close packing arrangement.
Explain the unit cells must have the same types of atoms : It is stated that more than one unit cell can be chosen for a structure. If they represent the same structure, however, the unit cells must have the same types of atoms
Explain the activation energy of this reaction in kj/ mol : The rate constant, k, for a given reaction was determined at a number of temperatures. A graph of log k versus the reciprocal of the Kelvin temperature yielded a straight line with a slope of -250 K. What is the activation energy of this reaction ..
Define how do these molecules function as radical inhibitors : When talking about Hydroxyquinone, BHT and BHA as radical inhibhitars, they are commonly additives to foods such as Crystal Light. (BHA:to help protect flavor). How do these molecules function as radical inhibitors. Show how these molecules interc..
Explain tungsten crystallizes in a cubic unit cell : Tungsten crystallizes in a cubic unit cell with an esge length of 3.165 (Angrstroms)and with a tungsten atom on each of the corners of the unit cell and in the center of the unit cell
What is the npv of this project : Suppose that to raise the funds for the initial investment, the project is sold to investors as an all-equity firm. The equity holders will receive the cash flows of the project in one year. How much money can be raised in this way—that is, what is t..

Reviews

Write a Review

Chemistry Questions & Answers

  Estimate empirical and molecular formulas of ethylene glycol

Ethylene glycol is used as automobile antifreeze. 6.38g og this compound contains 2.47g of carbon and 0.620g of hydrogen. The rest is oxygen. The molar mass is 62.0g/mole.

  Explain what are the coefficients for oh

Balance the following redox reaction as it occurs in the basic solution. What are the coefficients for OH^- an ClO^- in the balanced equation? Cr(OH)4^- (aq) _ ClO^- (aq) arrow CrO4^2- (aq) + Cl^- (aq)

  Explain a boiler is used to heat steam at a brewery

A boiler is used to heat steam at a brewery to be used in various applications such as heating water to brew the beer and sanitizing the brewing tanks

  Explain the formal charge on the indicated atom

What is the formal charge on the indicated atom in each of the following species? sulfur in SO2 nitrogen in N2H4 each oxygen atom in ozone, O3

  Explain diluted solution is then placed in a spray bottle

The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted spray

  What is the molar concentration of nitrous acid

what is the molar concentration of nitrous acid in a solution with a volume of 276 mL containing 17.1 grams of hydrogen nitrite?

  Explain how many moles of hcl must be added to decrease

A buffer is composed of 0.400 mol H2PO4^- and 0.400 mol HPO4^2- diluted with water to a volume of 1.00 L. The pH of the buffer is 7.210. How many moles of HCl must be added to decrease the pH to 6.210?

  Define the pentose phosphate pathway

what is the net cost in terms of ATP when 3 molecules of glucose are directed to the pentose phosphate pathway at the level of glucose 6- P rather than continuing through glycolysis?

  Explain the heat of combustion per gram of quinone

The temperature of the calorimeter increases from 24.56 *C to 32.01 *C. What is the heat of combustion per gram of quinone and per mole of quinone?

  How much energy is required to heat the ice

A piece of ice weighs 35.0 g. how much energy is required to heat the ice from a solid at -5.0 degrees C to liquid water at 65.0 degrees C?

  Explain how many grams of agcl will dissolve in nh

Calculate the solubility (in mol/L) of silver chloride in 2.0 M NH3 solution. How many grams of AgCl will dissolve in 500. mL of 2.0 M NH3?

  Calculate the cell potential

A voltaic cell employs the following redox reaction: 2Fe3+(aq)+3Mg(s)--> 2Fe(s)+3Mg2+(aq+ Calculate the cell potential at 25 under each of the following conditions.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd