Draw a rough energy band
In what type of material is the energy gap between the valence and the conduction band the greatest? Na, Ge or diamond. Draw a rough energy band showing the valence and conduction bands in these materials.
Now Priced at $20 (50% Discount)
Write a reaction mechanism for the chlorination of 1-butene by Cl2. Use curved arrows to show electron movement. Show structures of key reaction intermediates and products and indicate the stereochemistry of the reaction.
The energy of the electron in the lowest level of the hydrogen atom (n=1) is -2.179×10-18 J. What is the energy of the electron in level n=6
Calculate the standard reaction enthalpy for the following reaction. N2H4(l) + H2(g) -----> 2NH3(g) Given: N2H4(l) + O2(g) -------> N2 (g) + 2H2O(g)
What is the pH of a solution made by mixing 100.00 mL of .20 M HCl with 50.0 mL of .10 M HCl. Assume that the volumes are additive
Use Slater's rules to calculate the shielding constant and effective nuclear charge for a 5s, 5p, and 4d electron in the tin atom. Which of these electron experience the lowest effective nuclear charge
For each reaction, identify the substance being oxidized and the substance being reduced. Express answers as chemical formulas for oxidized and reduced answers. 1. 2Sr(s)+O2(g)----->2SrO(s) 2. Ca(s)+Cl2(g)---->CaCl2(s) 3. Ni^2+(aq)+Mg^2+(aq)
To isolate caffeine from tea, Dora forgot to evaporate methylene chloride (15 ml) before adding the acetone and petroleum ether to crystallize the final product from material containing traces of chlorophyll. No caffeine crystallized. What should
Unit cell problem of copper (Cu) is a face-centered cube that has an edge lenth of 3.62 A (note: 1A=1*10^-10 m). Determine the volume occupied by one mole of copper atoms, , in terms of mL/mol.
Hydrogen peroxide is a powerful oxidizing agent used in concentrated solution in rocket fuels and in dilute solution as a hair bleach. An aqueous solution of hydrogen peroxide is 30.0% m/m and has a density of 1.11g mL-1. Calculate its molality, m
the turbine at apressure of 3 bar for process heating. If the condensate from the processheater is directly pumped back to the boiler, find: the power output from the turbine.
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!