TRUE OR FALSE A Reflection Nebula is an Absorption Nebula that reflects light from a nearby star.

Q: The following is an UV-Vis schematic diagram. Based on this diagram, answer the following questions:…

A:

Q: Why is emission wavelength longer than absorption wavelength?  Please answer shorty(to the point) at…

A: The energy of the emitted radiation is either equal to or less than the absorbed radiation. Energy…

Q: What is continuous spectrum?

A:

Q: A minimum of 352.3 kJ/mol is required to remove an electron from a(n) uranium metal surface. What is…

A: Given data, Energy to remove an electron = 352.3 kJ/mol We know, 1 mole = 6.022 x 1023 electrons…

Q: Define refractive index of liquids . How we measure the refractive index of liquid by abbe's…

A: The refractive index of a material is a  dimensionless number that describes how fast light travels…

Q: Describe the difference between red and violet light

A: Light or visible light is electric radiation within the part of the electromagnetic spectrum that…

Q: .A diffraction grating has 410 lines per mm. If light of wavelength 560 nm is sent through this…

A:

Q: What

A: We will write the components of spectroscopic instruments

Q: A laser Light was shone through a diffraction grating whose lines were 1/1000 mm apart. The distance…

A: It is given that diffraction grating lines are 0.001 mm apart, and the distance between the centre…

Q: Spectrophotometers employ various sources of light. Which of the following is NOT true for…

A: To answer: Which of the following is NOT true for spectrophotometer light sources?   Introduction:…

Q: What are natural line widths for atomic emission and absorption lines? About how broad are these…

A: Spectral lines are lines which help in identifying the atoms and molecules. These are a result of…

Q: Which light source emits light as a result of blackbody radiation? Select one: a. deuterium arc…

A: A xenon arc lamp produces a black body-like emission spectrum corresponding to 6200 K which is a…

Q: How many grams of CuSO4 5H2O to make up 250 mL of a 0.2 M stock of this solution? Using M1V1 = M2V2…

A: Molar mass of CuSO4.5H2O is 250 g/mol. Let the number of grams of CuSO4.5H2O needed be x g.There…

Q: 3. Calculate the speed of light in a diamond. The index of refraction in diamond is 2.417. Remember…

A: Refractive index is basically defined as the ratio of speed of light in vacuum with the speed of…

Q: Chemistry What is the relative probability of an -ray will undergo a photoelectric interaction in…

A: To get:   Relative probability an-ray of bone

Q: Define Configuration Identification.

A: A configuration item  includes tangible assets, equipment, hardware, documentation and software.…

Q: How many possible micro-states will a system with 11 argon atoms in 11 slots have?

A: Given  number of Argon atoms =11 Number of slots =11 To calculate :- Number of microstates

Q: arrange these three colors of visible light green,red,and blue in order to increase wavelenght

A: Electromagnetic spectrum involves different radiations from the lowest to the highest frequency…

Q: What are the components of typical spectroscopic instruments?

A:

Q: If the infrared radiation has wavelength of 3.5 microns, what will be the wave number in cm^-1? A.…

A: Given: Wavelength = 3.5 microns = 0.00035 cm

Q: 8. In the diagram below, the average percent transmission of light versus wavelength is profiled for…

A: Water are common materials that are very good at transmitting light. They are transparent because…

Q: what is thresh-hold frequency in the photoelectric effect ?

A: When a metal surface is exposed to light of certain frequency the metal ejects electron(s) of…

Q: A UV light with a wavelength of 250. nm is shone on the silver surface. What is the incident energy…

A: Energy is inversely proportional to wavelength

Q: Indium compounds give a blue-violet flame test, of which the photons have energy of 265 kJ/mol. What…

A:

Q: Create a fluorometer schematic diagram and in a spectrofluorimetric analysis, why is it required to…

A: Fluorescence describes a phenomenon where light is emitted by an atom or molecule that has absorbed…

Q: How many spherical nodal surfaces are there in 4s – sub-shell?

A:

Q: The human eye responds to radiant energy between Violet color and Red color الاختيارات false O true…

A: Human eye is only sensitive to the visible part of the electromagnetic spectrum that is from 200 nm(…

Q: Which property of laser light is NOT correctly defined/described? extremely bright: high power at…

A:

Q: A minimum of 221.9 kJ/mol is required to remove an electron from a(n) potassium metal surface. What…

A:

Q: What kind of spectrum do you get from a hot opaque object viewed through a cooler transparent gas?…

A: Continuous spectrum when object viewed through a  cooler transparent gas  Correct options is A…

Q: A laser li

A: Diffraction grating is done by making many parallel scratches on flat transparent material. There is…

Q: A wave that requires a medium in order to travel is an Transverse Wave. O True O False

A: Following is the definition of Transverse wave and so the correct answer as follows.

Q: Define the following terms:  Reflection: Rayleigh scattering :

A: Definition of Reflection:-                                               Reflection is the change…

Q: Refraction is directly related to concentration. true or false? O True O False

A: The statement given is "Refraction is directly related to the concentration".

Q: Remaining Time: 26 minutes, 33 seconds. Question Completion Status: > A Moving to the next question…

A: The bcc lattice can be considered as a unit cubic cell with two lattice points per cell.

Q: A detector measures the amount of light generated by the flame and not absorbed by iron. True False

A:

Q: . Define the following terms:  Diffraction: Dispersion: Refraction

A: Each term is defined along with that suitable example is given of where it occurs is given below

Q: (i) Define frontier orbitals. (ii) Why are frontier orbitals important?

A: The application of molecular orbital theory is called a frontier orbital theory. It describes the…

Q: Longer wavelength have .8 High energy Lower energy O Band spectrum C

A: The energy of a wave is related to the wavelength of the wave as follows: E=hcλ Where h is known as…

Q: In general, how do IR radiations compare in energetic magnitude with those of UV, X-rays and…

A:

Q: Consider a three-level laser system. The wavelength for an absorption from level A to level C is 477…

A: We will draw diagram and then using it calculate required wavelength.

Q: Explain the following, giving examples in each case: the inert pair effect refractive lining

A: (a)  In periodic table, especially in group 13,14 and 15 , down the group, electrons in the…

Q: In this experiment a spectroscope is used to look at the emission spectrum of an unknown metal. A…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: When performing radioscopy is used: Required to answer. Single choice. the ability of the shortest…

A: A multiple choice question based on radioscopy, which is to be accomplished.

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.