19. An engineer wants to irradiate a surface with a total of 2.1 x 103 Joules of energy from a blue laser that has a wavelength of 475 nm. How many photons must the engineer shine on the surface to achieve this total energy? A. 2.99 x 103 B. 1.50 x 1030 C. 2.22 x1034 D. E. 5.02 x 1021 8.79 x 1015

Q: Assignment Content Question 1 Consider the reaction below. CO₂(8) + 6H₂O(1)→ CH₁2O6(s) + 60₂(g) +…

A: In the given question, a reaction is given and we have to find the correct option for that.

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A:

Q: C A Free Energy (kcal/mol) 20

A:

Q: 3. What is AH for the reaction: 2 CO9+Ozg → 2 COzig) if: (1) Cu+ 1/2 Ozo → COg) (2) Cơi + Ozie) →…

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Q: he following series of reactions were carried out. PbCO3(s) +2HNO3(aq) ---> Pb(NO3)2(aq)…

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Q: Gilu the wbauetwee ay the cemmpeond cahe le epectaum thowe g 15, 43, 57, 91 Yalues 165, 148

A:

Q: 2. Consider the following reactions in open systems: I. 2H3) + Oe) → 2H,0g) CACO) →CAO +CO2«8) CaO…

A:

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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.