What happens in the process of fluorescence? a. water molecules are broken up into hydrogen and oxygen b. atoms absorb ultra violet rays and convert them to visible light as their electrons cascade to lower energy levels c. hydrogen is transformed into helium, where gas is very very hot d. radio waves are given off as molecules change their vibration or rotation e. fluorine gas is released by chemical reactions in the outer layer of a star

Q: While the wavelength of light decreases (the frequency of light increases), what happened to the…

A: Energy of ejected electron = h x frequency Frequency  is inversely proportional to wavelength.

Q: Identify the different forms of energy that constitute the total energy of a macroscopic amount of…

A: Kinetic energy , Internal energy and potential energy are the different forms of energy that…

Q: Radio Waves travel at the speed of light, which is 3.00X108 m/s. How many kilometers will a radio…

A: Given,Speed of radio wave = 3 × 108 m/sTime = 1 yearFirstly, converting year (yr) to seconds (s) :

Q: The distance from the sun to Earth is 1.50 x 108 km. The speed of light is 3.00 x108 m/s. How many…

A: Given, Speed of light - 3.00 × 108 m/s. Distance between sun and the earth - 1.50 × 108 km = 1.5 ×…

Q: Determine the wavelength of an electron that has a kinetic energy of 1.15 x 10-19 J. Report your…

A: Kinetic energy = 1.15 × 10-19 J  Wavelength of an electron (in nm) = ?

Q: Visible light is the only part of the spectrum that humans CAN see. O True O False

A: Visible light spectrum is a segment of an electromagnetic spectrum. It has wavelengths from 380 to…

Q: Ultraviolet light rays can be harmful and helpful to humans. O True O False

A: The Ultraviolet light is high energy radiation having energy greater than visible light.

Q: What electromagnetic radiations are considered to be dangerous with a lot of exposure and why?

A: Electromagnetic radiation are the radiations which travel in waves with both electric and magnetic…

Q: Energy that is associated with the relative positions of electrons and nuclei in atoms and molecules…

A: There are many electrons revolving around nucleus. They will move in certain energy levels called…

Q: Sodium vapor lamps are often used in residential street lighting. They give off a yellow light…

A: Hey, thanks for your question. We are authorised to solve only one question at a time. Please post…

Q: How many photons of light are emitted when an electron falls from the fourth energy level to the…

A:

Q: Why do energy levels exist in atoms? a. electrons are negatively charged b. electrons are…

A: Electrons in an atom occupy different energy levels that exist in an atom.

Q: Which color of visible light has the longest wavelength?  A. Red  B. Yellow  C. Blue D. Violet

A: Relative wavelength and color: Violet < Indigo < Blue < Green < Yellow < Orange <…

Q: • Electrons must absorb energy when they Electrons emit as they A larger jump down would release…

A: 1) jumps to a higher orbital . this state is call exited state 2)energy when they jumped to lower…

Q: What is solar corona?

A: Corona, outermost region of the Sun's atmosphere, consisting of plasma (hot ionized gas). It has a…

Q: what is X-Ray ? what is use of it?

A: X-ray is an electromagnetic radiation having wavelength between 0.01 to 10 nm. They are produced…

Q: Number one is meant for the yellow dot. Number two is meant for the green dot. Number three is meant…

A: The atom is constituting a particle of matter, composed of three fundamental particles are present.…

Q: A VHF television station assigned to channel 22 transmits its signal using radio waves with a…

A: Wavelength = 577.22 mm

Q: Is light a matter or not? Why?

A: Matter is defined as anything which possess a definite mass and volume. There are 3 states of…

Q: One nanometer is  a. Larger than the wavelength of visible light b. Around the same size as the…

A: Explanation to the correct answer is given below

Q: The distance to the North Star, Polaris, is approximately 6.44 × 1018 m. (a) If Polaris were to burn…

A: a)

Q: wave, quanta, frequency, energy, speed of light, wavelength, photon Electromagnetic radiation is a…

A: The speed of electromagnetic waves is 3×108 m/s in a vacuum.

Q: Why is it easier to use helium ions rather than neutral helium atoms in such a microscope? (a)…

A: The He-ion microscope is the one that uses a beam of He-ion for its purpose. The use of this…

Q: 1. An Olympic-sized swimming pool contains 2,500,000L of water. How many megaliters (ML) is this?…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: What happens in the process of fluorescence?     water molecules are broken up into hydrogen and…

A: An atom has different energy levels. They are electronic energy levels, vibrational energy levels,…

Q: Which scientist showed that white light can be separated into different colors using a prism? O…

A:

Q: Use the models to answer the following question. Model A Model B Which is the correct model and…

A: Given  Model A and Model B diagram is given  To find : Correct statement = ?

Q: number of photons

A:

Q: Calculate the difference in energy (in joules) between a photon with λ= 687 nm and a photon with λ=…

A:

Q: Convert the mass of one electron (m=9.10*10^ -31kg) to energy. Recall the speed of light c = 3.00 *…

A: Given that, m=9.10×10-31 Kg  c= 3.00×108 m s-1 Energy E = ?

Q: An AM station broadcasts rock music at 8.70 × 102 on your radio dial. Units for AM frequencies are…

A: Given: Frequency of the AM station =8.70 × 102 kHz To Calculate: the wavelength of the station's…

Q: electrical energy, it emits radiation in  a)  the infra-red, visible and ultra-violet regions of…

A: In form of infrared, visible and ultraviolet regions of the electromagnetic spectrum.

Q: Approximately how far does light travel in 3.154 x 107 seconds?

A:

Q: Be sure to answer all parts. An FM station broadcasts classical music at 91.9 MHz (megahertz, or 106…

A: 1 MHz is equivalent to 106 Hz. 91.9 MHz is equivalent to 9.19 × 107 Hz. The relationship between…

Q: 17. An object on the moon would have the same as that object on the earth.

A: We know that, mass does not depend upon the place where it is to be measured, it remains same at…

Q: Consider the relationship between energy, frequency, and wavelength of light. The greater (higher)…

A: According Einestein energy equation E= hv where E= energy, v = frequency so energy directly…

Q: Red visible light has a wavelength of 6.5 x 10^-7 m. What is the frequency in s^-1

A:

Q: Complete this sentence: Atoms emit visible and ultraviolet light Select one: a. as electrons move…

A: 1)  The sentence which explains the given statement             "Atoms emit visible and ultraviolet…

Q: Based upon the amount of energy in a given state of matter, which state of matter would have the…

A: When the solid-state of a substance is converted into a liquid state, the process is known as…

Q: The energy of a particular color of yellow light is 3.40×10-22 kJ/photon. The wavelength of this…

A: We know E=hv, = h(c/λ) Here h=planck’s constant =6.636x 10-34 Js v = frequency   the energy of…

Q: X-rays have a wavelength small enough to image individual atoms but are challenging to detect…

A:

Q: The brightest object in the sky is what? A. The Sun B. The Moon C. Venus D. Mars

A: Of course, the star that appears the brightest to all of us on Earth is the Sun.

Q: scanning electron microscope a.Uses glass lenses to focus the image of the sample b.Scans a proble…

A: A scanning electron microscope is used for the detection of the samples.

Q: Give some examples from daily life that shows quantization

A: You can't quantize normal things. But if your quantizing anything that directly shows that it will…

Q: The wavelength of a particular color of red light is 662 nm. The frequency of this color is…

A:

Q: An electrical engineer measures the frequency of a satellite radio transmission. The frequency is…

A: Frequency can be defined as the number of electromagnetic ( radio waves in this case) through a…

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.