Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1. Quantum dots, also known as nanocrystals, are a special class of materials known as semiconductors, which are crystals composed of periodic groups of II-VI, III-V, or IV-VI materials. Quantum dots are unique class of semiconductor because they are so small, ranging from 2-10 nanometers in diameter. The size of pencil lead in a mechanical pencil is 0.0197 inches.
a. How many quantum dots fit into a pencil mark on a page ½ " long assuming the quantum dot has a diameter of 7.8 nm?
b. PEZ© candy was invented in Vienna in 1927. The confectionery itself takes the shape of pressed, dry, straightedged blocks (15 mm (5/8 inch) long, 8 mm wide and 5 mm high), with Pez dispensers holding 12 Pez pieces. Assuming that the quantum dot is spherical, how many quantum dots would be contained in a Pez© candy dispenser?
a saturated solution contains 11.0 g NaBrO3 in 40.0 mL of water at 0 degree Celsius. What is the solubility in g solute/(100 g H2O)? Calculate the mole fraction at this temperature.
In which of the following are there more than eight electrons in the valence shell of the central atom?
Write the balanced net ionic equation for the standardization of the sodium thiosulfate solution by combining IO3-(aq) + 8I-(aq) + 6H+(aq) ----->3I3-(aq) + 3H2O(l)
why is the Lineweaver Burke plot superior to the Michaelis- Menton plot for calculation enzyme kinetic values
Based on a K_c value of 0.210 and the data table given, what are the equilibrium concentrations of XY, X, and Y, respectively
What is the number (actual count) of [H+] in 10 mLs of water at a specific pH (like pH 9, 7, 2 etc.)
From the solubility data given, calculate the solubility products for the following compounds: a) SrF2, 7.3 x 10^-2 g/L b) Ag3PO4, 6.7 x 10^-3 g/L
The final temperature of the calorimeter is 150°F. What is the mass of titanium used? The specific heat capacity of water is 4.184 J g-1 °C-1.
What is the theoretical yield(in grams) of aspirin ,C9H8O4, when 2.00g of salicylic acid,C7H6O3, is reacted with4.00g of acetic anhydride
Use the Reaction Editor to write a balanced net ionic reaction for the reduction of cupric ion (Cu2+) by hydroxylamine (NH2OH) in acid solution, using the smallest integer coefficients.
A student wished to prepare ethylene gas by the dehydration of ethanol at 140 C, using sulfuric acid as the dehydrating agent. A low-boiling liquid was obtained instead of ethylene. What was the liquid, and how might the reaction conditions be cha..
What is the pH of the solution created by combining 2.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd