An electron in a hydrogen atom relaxes to the n 4 level, emitting light of 7.4 x 1013 Hz. What is the value of n for the level in which the electron originated? 7 8 2 3 5

Q: given the molar mass of of compound A as 327.34g/mol and the mass being 0.016g. calculate the…

A: Given that, the molar mass of compound A as 327.34 g/mol. The mass of the compound A is m = 0.016 g.…

Q: Calculating the pH at equivalence of a titration A chemist titrates 250.0 mL of a 0.5586M cyanic…

A: we have to calculate the pH at equivalence point

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A: Given :- initial concentration of solution = 2.5 mol.dm-3 Initial volume =  25.0cm3  Final volume =…

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A:

Q: H. Application: Choose which test/s does the following structure of compounds will give positive…

A: There are many mechanisms in organic chemistry such as nucleophilic substitution, nucleophilic…

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A: Percent concentration by mass is the mass of solute divided by the total mass of the solution and…

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A: A) Given: density of solution = 1.1094 g/mL Molar mass of H2SO4 = 98.079 g/mol Mass percent of…

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A: Interpretation: To explain the data of the graph and and spectrophotometric analysis of aspirin.

Q: ОН | | OH НО ОН

A: Both molecules are chiral.having two chiral centre .

Q: Part II. Determination Ka and Molar Mass of Unknown Monoprotic Acio

A: The unknown acid is monoprotic, also the base used (NaOH) is monoacidic.

Q: Conc. of NaOH: TRIAL 1 TRIAL 2 TRIAL 3 Mass of flask 81.061 g 69.692 g 96.039 g Mass of flask and…

A: We are given the table in the question: By checking the values from it we will find the required…

Q: What goal is accomplished by standardizing  solutions?

A: Standard solution is made from a solute of known amount to prepare a solution of known…

Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: The relation between molality and mole is-  Molality= mole / kg of solvent

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.