Explain and name the physico-chemical phenomena that can help astrophysicist know the chemical composition of parts of space?

Q: What is the radiant power of the sun if r = 6,960 x 108 m?

A:

Q: what two movements form an orbit?

A: An orbit is the path one object in space takes around another.

Q: Why are only certain wavelengths emitted from an atom?

A: Given: Only certain wavelengths emitted from an atom.

Q: Place the following types of radiation in order of increasing wavelength by numbering them from 1…

A:

Q: Define the term speed of light?

A: The term speed of light has to be defined.

Q: 6.9 The average distance between Mars and Earth is about1.3 × 108miles. How long would it take video…

A: 1 mile= 1.61 km ∴1.3×108 miles = 1.61 ×1.3×108                               =20930000 km 1 km =1000…

Q: 5. No simple equations like the Bohr equations exist for atoms other than hydrogen. Explain why this…

A: According to Bohr's theory, negatively charged electrons revolves around a positively charged…

Q: Both blue and green light eject electrons from the surface of potassium. In which case do the…

A: When a metal is irradiated with radiation of certain frequencies, there occurs the ejection of…

Q: Differentiate between infrared radiation and microwave radiation?

A: Microwave and Infrared radiations both are the forms of electromagnetic radiation. The microwave…

Q: What is the velocity of the electrons from potassium?

A: Photoelectric effect : Ejection of electrons from metal surface when a suitable light fall on it…

Q: If solar radiation is 1130 W/m how many photons strike the leaf every second? Assume three…

A: Please find your solution below : In order to find the number of photons, we need power and total…

Q: How do the emission spectra for hydrogen and helium compare? helium has more emission lines in the…

A: Emission spectra is obtained when an atom is introduced to energy it gets excited to a higher energy…

Q: Describe briefly the atomic or molecular processes involved in the production of X -rays and…

A: IR radiation: It is part of electromagnetic spectrum having wavenumber range of 4000 - 670 cm-1.…

Q: Heat is radiated from Earth to space predominately in the form of A. infrared radiation. B.…

A: Heat, energy transmitted by difference in temperature from one body to another. When two bodies are…

Q: Determine the temperature of the surface of the sun if the hydrogen atoms move with an average speed…

A: Given, average speed of hydrogen = Vav = 1.2 × 104 m/s. Molar mass of hydrogen (M) = 2 g/mol…

Q: The Brownian Motion was discovered by A) Robert Brown B) Mandel Brown C) Isaac Newton D) John Brown

A:

Q: Give an approximate range of wavelengths for type of electromagnetic radiation and summarize the…

A: a. Gamma rays:

Q: What is solar corona?

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

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: Radio communications travel at the speed of light (2.9979×10⁸ meters/sec). How long will it take for…

A: Given : Speed of radio communications = 2.9979 X 108 m/s And distance between the space probe and…

Q: The relationship between speed, wavelength and frequency is: Ov=- C. Ov= Ov=1+ Ou=c+

A: Write the relation between speed, wavelength and frequency ?

Q: Which of the following types of radiation has the greatest frequency? Microwaves, Ultraviolet,…

A: X-rays has Highest frequency in given radiations and  hence has highest energy .

Q: Arrange the following in order of decreasing wavelengths  microwave, x-rays, radio waves

A: All these radiations are considered as Electromagnetic Radiations. We can arrange the given…

Q: 4. A satellite flying by Jupiter takes a picture of the Great Red Spot. How long does it take the…

A: Given : Distance = 892 million km

Q: Calculate the speed of a comet if it is rotation about the Sun in circular orbit with radius…

A:

Q: What must be the velocity, in meters per second, of a beam of electrons if they are to display a de…

A: De Broglie gave a quantitative meaning to his idea by proposing an equation which relates the wave…

Q: Note the major accomplishments of the following A. Chadwick B. deBroglie C. Geiger D. Bohr E.…

A: Chadwick made a fundamental discovery in the domain of nuclear science: he proved the existence of…

Q: If you have a 100 Watt lamp, about how many photons are emitted per second, assuming the majority of…

A:

Q: Label each variable in the Rydberg equation with the correct units. m 1 1 1 = R unitless m m/s Js kg

A:

Q: Which of the following scientist’s described a model of the atom that included the energy levels?…

A: PART a) Bohr  described the model of the atom that included the energy levels. In his Bohr's atomic…

Q: Here is oh of the probability of an atom moving with a particular speed, for a sample of neon gas at…

A: We can answer this question by just evaluating the graph. Most likely speed means the speed at which…

Q: Discuss the physical origins of quantum mechanical tunnelling. How does tunnelling appear in…

A: According to Born interpretation, the probability density of a particle is equal to the square of…

Q: Here is a graph of the probability of an atom moving with a particular speed, for a sample of neon…

A: The peak of the graph is obtained in middle of 300 and 350 m/s. It shall be considered as the most…

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: How to measure the emission spectrum of Hydrogen, Neon and mercury vapors?

A: Emission spectrum of hydrogen: If we take hydrogen gas in a glass tube and pass electric current,…

Q: The wavelength of an electron exist in a * stable orbit n=1 is equal to

A: The radius of first Orbit is given by - r1 = r0 × n2 Here, r1 = radius of first Orbit = ? r0 =…

Q: A proton is approximately 2000 times heavier than an electron. How would the speeds of these…

A: A proton has a positive charge while an electron has a negative charge.

Q: What is the value of x?

A: Acetic acid glacial concentration = 99.8 %  Mass of acetic acid = 99.8 g      mass of solution = 100…

Q: The wavelength of an electron exist in a stable orbit n=1 is equal to *

A: Energy Level Available to the  electron is = n=1  Every electron in atom has some binding energy…

Q: Use chemical equations to explain origin of the oxygen waves

A: Oxygen gas is composed of diatomic (O2) molecules. Many other elements are also composed of…

Q: Tn 3.1 Systems of Measurement (pe x ?attempt%3D9974984&page%3D1&cmid%3D1276017 asses Why was the…

A: Introduction :  Orbiters are the astronomical devices which fly around the planet making…

Q: How long would it take an instruction to a Martian rover to travel from a NASA site on Earth to…

A:

Q: Why doesn’t the solar spectrum at sea level perfectly match the solar spectrum outside the…

A: Given statement,       The solar spectrum at sea level doesn’t perfectly match the solar spectrum…

Q: How to find the difference in energy between two level responsible for ultraviolet emission at…

A: The difference in energy between two levels (∆E) = h ν = h c/ λ where, ∆E = difference in energy…

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.