Define what is wavelength of a photon with the energy

Assignment Help Chemistry
Reference no: EM13498834

Because of its semiconducting properties CdS, is sometimes used in electronic devices. The band gap energy for CdS is 2.40 eV. What is wavelength of a photon with this energy?

Express your answer numerically in nanometers.

lambda = nm

Reference no: EM13498834

Questions Cloud

How much water has accumulated in the car : An open railroad car of mass 2496 kg is coasting with an initial speed of 17 m/s on a frictionless, horizontal track. How much water (in kilograms) has accumulated in the car
Explain sulfur-38 has an atomic mass of a half-life : Sulfur-38 has an atomic mass of 38.0 and a half-life of 2.87 h. How long does it take for 99.99% of a sample of sulfur-38 to decay
What is the mass of the core of the sun : 1. What is the mass of the core of the Sun?
Find the magnitude of the lighter blocks acceleration : Two blocks of weights 45.0 and 83.0 N are connected by as massless string and slide down an inclined plane making an angle of 31.0 deg. to the horizontal. find the magnitude of the lighter block's acceleration
Define what is wavelength of a photon with the energy : Because of its semiconducting properties CdS, is sometimes used in electronic devices. The band gap energy for CdS is 2.40 eV. What is wavelength of a photon with this energy?
What is the vertical force on each of the supports : A 130 horizontal beam is supported at each end. A 310 piano rests a quarter of the way from one end. What is the vertical force on each of the supports
Explain how many moles of solute particles are present : How many moles of solute particles are present when 0.25 moles of CaSO4 is dissolved in water
Define the molarity of the solution : To prepare a solution of NaCl, you weigh out 2.634(±.002)g and dissolve it in a volumetric flask whose volume is 100.00(±0.08)ml. Express the molarity of the solution, along with its uncertainty, with an appropriate number of digit.
Explain nmr with only peaks for methyl : As part of an internship in a petrochemical company you are given the task of identifying the fractions coming off the distillation tower. The current fraction shows a 1H NMR with only peaks for methyl (CH3) and methylene (CH2) groups

Reviews

Write a Review

Chemistry Questions & Answers

  How much fecl3(s), in moles, is obtained

Iron reacts with chlorine gas as follows: 2 Fe (s) + 3 Cl2 (g) > 2 FeCl3 (s)

  Explain that the patient receives 8 grams of nal

131I is readily available in Sacramento. Samples of 131I take 10 hrs to properly package and clear security before they are allowed to leave the site. Assuming that it takes 2 weeks to provide the safe ground transport to a clinic in Cleveland Ohi..

  Write the structural formula of organic product that would

write the structural formula of organic product that would result from the reactionch3-chch2

  How many moles of acetic anhydride are consumed in reaction

Formulate a reaction mechanism to show how, with excess acetic anhydride ,2-methyl benzisoxazinone might be formed.(Hint: acetylation of the amino group should occur first). How many moles of acetic anhydride are consumed in this reaction?

  Evaluate the heat released to the surroundings

The value of delta H for 2CO(g) + O2 (g) = 2CO2(g) is -482 kJ. Calculate the heat released to the surroundings when 38.5 g of O2 (g) reacts with excess CO

  Find the rate of the reactionc2h4gnbspnbspnbsp o3gnbsp

find the rate of the reaction.c2h4gnbspnbspnbsp o3gnbsp harrnbspc2h4ognbsp nbsp o2ga. the concentration of

  Explain mechanism for all steps in the addition of hbr

Write a detailed, stepwise mechanism for all steps in the addition of HBr to 1-pentene in the presence of peroxide. Show all intermediates and use cuved arrows as appropraite.

  The first step in the citric acid cycle of food metabolism

The first step in the citric acid cycle of food metabolism is reaction of oxaloacetate with acetyl CoA to give citrate. Propose a mechanism, using acid or base catalysis as needed. Oxaloacetate + Acetyl CoA ----> Citrate

  Explain cancerous tumors involve irradiation

Radiation therapy. An effective treatment for some can cancerous tumors involve irradiation with fast neutrons. The neutrons from one treatment source have an average velocity of 3.2 X10-7 m/s.

  What are the values of delta h

You may assume that delta H and delta S are independent of temperature.

  State what is being oxided and reduced through mechanism

During a Heck reaction Palladium, from palladium acetate, undergoes a change in oxidation state. Define what is being oxided and reduced through mechanism

  Explain exactly one-half of the magnesium ions

A 224mL sample of an aqueous solution contains 2.80% MgCl2 by mass. Exactly one-half of the magnesium ions are Mg?28, a beta emitter with a half-life of 21 hours

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