A chemical species with an unpaired electron is called a__________________.

Q: If the student increased the rate at which drops were added to the pan, this would increase the v of…

A: The given cindition: If the drops are dropped increasing rate.  i.e more drops are added in a given…

Q: As the cell thickness increases, the intensity of the transmitted light also increases. Is this True…

A: Ans -      This statement is false. Explain -       As the cell thickness increases, the intensity…

Q: Find Ecell and ∆G.

A: we are required to find the cell potential of the reaction and standard Gibbs free energy of the…

Q: A 0.4567 g sample of a ruthenium containing ore was dissolved in acid, treated appropriately to…

A: Given - Mass of ore = 0.4567 g Volume of solution = 50.00 ml Absorbance of solution = 0.600 To find…

Q: Based on the given data, construct and evaluate the calibration curve by plotting absorbance versus…

A: #Calculation for the mean concentration of Copper: Mean absorbance of the diluted (1:10) unknown tap…

Q: Describe Hund’s Rule?

A: In Hund's rule, the filling up of the electrons in the orbital and the spin of the electrons are…

Q: A temporary magnet will O a O b never have a magnetic field have only a weak magnetic field have…

A: C)  have magnetism only within a magnetic field.

Q: How are impurities separated from bauxite ore to get pure alumina?

A: To find: How are impurities separated form the bauxite ore to get pure alumina

Q: energy required ionization

A: Ionization energy is the amount of energy required to remove one electron from the outermost shell…

Q: Table II Cuvette # Concentration Absorbance 0.50 M 1 1.049 2 0.40 M 0.926 3 0.20 M 0.740 0.298 4…

A: The formula for Beer-Lambart law is given by

Q: Chemistry Select the choice with words that best fills in the blanks in the following statement The…

A:

Q: Infra-red radiation impacts? Electronic energies O Vibrational energies O Rotational energies O…

A: UV-Vis radiation imparts electronic energies in the molecule. IR imparts vibrational energies in the…

Q: Commercially available H2SO4 is diluted to reduce its strength so that it will be safe for use by…

A: Commercially available H2SO4 is diluted to reduce strength because the commercially available H2SO4…

Q: The detection limit is the lowest measurable concentration True

A: The detection limit is nothing but the lowest quantity of a substance that can be distinguished from…

Q: [References] Use the References to access important values Which of the following statements are…

A:

Q: The nickel level in a soil sample was determined using AAS. A 3.0 g sample was dissolved in acid and…

A: Given: The calibration curve equation is y = 0.0699x + 0.015  Absorbance of the sample = 0.3 Volume…

Q: Question 10 Which of the following statements is false about single beam absorption instruments? A…

A: The statements about single beam instruments are A) Test tube is used as sample holder. It is True…

Q: TRUE OR FALSE Interstellar reddening results when stars near death become Red Giants.

A: True

Q: A student creates a Beer's Law calibration curve in the lab. The equation for the best fit line is…

A: Given : y = 2994x + 0.0901

Q: A local surf report provides the height of the wave from the trough to the crest of the wave. How…

A: The amplitude of a wave is the measure of the height of the wave. The highest surface part of a wave…

Q: What is affinity elution

A: A technique in which a compound that is nonspecifically bound to the matrix of a chromatographic…

Q: Electron transfer---- - the energy of the system of atoms. others equal O decrease Increases

A: From electron transfer from one atom to other there occur formation of ionic compound.

Q: What's a hypothesis about the experiment Colorimetric Determination of Iron?

A: The colorimetric analysis is the determination of change in the intensity of the color of the…

Q: The effect on motion when an electric potential is applied and positive ions drag a group of…

A: Retardation effect: Retardation is the delaying the process.  Thus by Retardation effect is when…

Q: Our electron microscope can operate at 40 kV of accelerating voltage. Find de Broglie wavelength of…

A:

Q: What are the types of MSDS forms? compare types

A: MSDS stands for Material Safety Data Sheet: It contains information about a material explaining its…

Q: What is answer #10

A: A state corresponding to maximum potential energy is known as transition state.

Q: Intensifying screens can be placed on both sides of the X-ray film (double-sided) or on one side…

A: Intensifying screens can be place in x-beam film in light of the fact that the two sides of x-bar…

Q: Which metal is used as needle for scanning tunneling microscopy? Rh O Ag Pt OW

A: Given,  Which metal is used as needle for scanning tunneling microscopy?

Q: In the flame test if two ions have similar colors what could help you distinguish one from the…

A: Flame test provide preliminary idea about the presence of metal ions. To further confirm this we…

Q: What is the correct order of parts of an AAS * Light Source, Detector, Wavelength selector, Sample,…

A: AAS stand for atomic absorption spectroscopy.

Q: 5) Discuss the sources of error in your experiment. 6) List three practical applications of MgO and…

A: 1,2,3 and 4 is correct. 5. Sources of error  a. At the time of measuring weight , fault in digital…

Q: 5- Which of the following statements is true for photoelectric effect? a) Photoelectric current is…

A: As we know that, As the Intensity of radiation is increased,the number of incident photons increases…

Q: Compare between Electron ionization (El) and Chemical ionization methods.

A: Chemical ionization requires a lower amount of energy compared to electron ionization (EI), but this…

Q: Enter your data of the masses, mi & m2 in kg as related to the current, I, in Amper and time, t, in…

A: The question asks to complete the table and plot  a graph of amount of charge (I*t) verus mass of Cu…

Q: Using the given data compute for the sodium concentration of the patient. Use the same formula in…

A:

Q: 3. In Part C, you prepare four solutions (starting concentrations are given blow) in test tubes and…

A: Kf = [FeSCN2+]/ [Fe3+] * [SCN-]

Q: Fluorescence occurs within (a) none of the above (b) 10-5 s (c) 10-5 ms (d) 10-5 ns

A: In fluorescence, matter absorbs light energy at a lower wavelength (higher energy) and emits light…

Q: Explain how product ion scan can overcome some of the limitations of a) electrospray, and b)…

A: Product ion scan

Q: Determine the absorbance of a solution that allows 73 units of light through from a light source…

A: The beer’s law explain that the concentration of a solution is directly proportional to the…

Q: To determine the amount of iron thiocyanate in a polluted water sample. We prepared a series of…

A:

Q: Abs at wavelength 1 ( = Abs at wavelength 2 ( = Sample nm) nm) Cr* Ni2* Unknown Set up the equation…

A:

Q: Match a row to a column * Luminescence Laser Photoconductivity Electron microscope O O Welding O O…

A: Luminescence is a process of emission of light. A laser is also a device that emits light in the…

Q: What are chemical properties of dielectrics?

A: The correct answer is given below

Q: Do you agree or disagree, explain why and why not? - The toxicity of chromium does not depend on the…

A: The toxicity of chromium depends on the chemical species. Cr is an element with atomic number 24.…

Q: Question 31 All of the following are assumptions in Beer-Lambert's Law, EXCEPT: O A. Path length is…

A: According to Beer Lambert law, absorbance of a substance is directly proportional to path length and…

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.