The work function (binding energy) is the energy that must be supplied to cause the release of an electron from a photoelectric material. The corresponding photon frequency is the threshold frequency. The higher the energy of the incident light, the more kinetic energy the electrons have in moving away from the surface. The work function for cesium (used in IR lamps) is equivalent to 202.6 kJ/mol photons. Use this information to calculate the energy, wavelength, and velocity of ejected electrons. What is the kinetic energy, in Joules, of each ejected electron when light of 250.0 nm strikes the metal surface?

Q: The osmotic pressure (in atm) of 0.499 M K2SO4 solution at 298 K is ______? Give your answer to…

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Q: what is the chemical formula for sodium acetate?

A: Sodium acetate is a basic salt formed from a weak acid, acetic acid, and a strong base, sodium…

Q: In the proton NMR, the hydrogens on the carbon next to the benzene ring, labeled J, would appear as…

A: Multiplicity :

Q: Please can u illustrated me on this I am lost

A: The detailed explanation of the given question is done below. The concept here used is from  the…

Q: Draw the correct product for the Diels-Alder reaction. 0.1- Select Dr

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Q: Please explain how you arrived at that answer. Please answer #3. 3. Draw the corresponding required…

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Q: The Pherric, New Mexico, groundwater contains 1.800 mg/L of iron as Fe3+. What pH is required to…

A: Fe3+(aq) is precipitated as Fe(OH)3(s).  The equation for the dissociation of Fe(OH)3(s) is…

Q: When burned, a sample of an unknown substance is found to emit light of frequency…

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Q: mole sample of ammonia at 14.0 atm and 25 °C in a cylinder fitted with a movable piston expands…

A: We know according to ideal gas equation PV = nRT  P is the pressure in atm  V is volume in L  n is…

Q: 2.How many milliliters of 12.0 M HCI (aq) are required to prepare 250 milliliters of 1.0 M HCl(aq)?

A: Molarity is defined as number of moles of solute dissolved per litre of the solution. Given initial…

Q: Pre-Laboratory Schematic Diagram: Please create a schematic diagram of Constant Pressure…

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Q: Tamiflu(shown below) is an antiviral medication used to treat influenza. What is the maximum number…

A: The formula for the number of stereoisomers possible for a molecule having "n" number of chiral…

Q: How many fused rings are there in steriod?

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Q: Propose an efficient synthesis for the following Ya. The transformation above can be performed with…

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Q: What are the rules and ways on how to name a polyatomic ion, with an example?

A: The following are general rules for naming polyatomic ion :

Q: Draw the Line Bond Structure for diatomic sulfur (S₂) Step 1: Count the total number of valence…

A: we have to draw the structure of S2 molecule by following the given steps

Q: When you look at the atoms involved in each of the examples to the left, what pattern do you notice…

A: To determine the pattern observed in difference in electronegativities of atoms , we would calculate…

Q: Give the formal charge on the highlighted carbon in each species. All H’s and electrons on the…

A: Formal charge is theoretical charge over an individual atom of polyatomic molecule. Formal charge is…

Q: The boiling point of water is 100.0°C at 1 atmosphere. How many grams of chromium(11) bromide (211.8…

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Q: (1). What will be the pH when 50.0 ml of 2.00M carbonic acid is mixed 20.0 ml of 3.00 M sodium…

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Q: A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the…

A: Density of a liquid is the ratio of mass to the volume of the liquid  Density= mass/ volume

Q: Br A B CI 2. List all the vibrational signals expected in the IR spectrum of the following compound…

A: Higher the strength of bond greater the stretching frequency.

Q: For each bond, select the arrow that indicates the direction of bond polarity. Leave the box blank…

A: In this question, we will select the direction of bond polarity.  If molecules is nonpolar then no…

Q: Consider the hypothetical reaction A(g) 2B(g). A flask is charged with 0.78 atm of pure A, after…

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Q: What is the correct product of the following ring opening reaction? 영 OH CB HO

A: epoxide ring is unstable it is readily open by acid or base to alcohol

Q: assuming ideal solution behavior what is the osmotic pressure of an aqueous solution of 1.64g of…

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Q: F H₂C CH3 - H3C CH₂

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Q: Nucleus containing protons and neutrons -10-4 A- Volume occupied by electrons I-SA The structure of…

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Q: For each of the following compounds, provide: a. Molecular Formula and molecular mass (for halides,…

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Q: 5. Predict the major product of the following Diels-Alder reactions with the correct regiochemistry…

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Q: Based on the picture where is the lambda max and among all samples who is the highest wavelength?…

A: 1. The picture given in the question showed that the characteristic absorption peaks at λmax =  620…

Q: Starting from the Newman projection below, rotate the back carbon to provide the structure in the…

A: Dihedral angle: A dihedral angle is the angle between two intersecting planes or half-planes

Q: Assume that your brass sample is pure copper and has a mass of 1.00 gram. Determine t concentrated…

A: Solution: We know when any metal is treated with mineral acid the corresponding metal salt will be…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

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Q: What is the IUPAC name for this compound? H IIa CH3CH₂CH₂ C-N-CH3

A: In this question, we need to be write the correct IUPAC of this compound.  This compound have CONH…

Q: 6.00L tank at 19.4°C is filled with 6.63g of chlorine pentafluoride gas and 7.01g of sulfur…

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Q: Draw the Line Bond Structure for oxygen difluoride (OF₂) Step 1: Count the total number of valence…

A: The octet rule : It refers to the tendency of atoms to prefer to have eight electrons in the valence…

Q: QUESTIONS 1-4: Predict the products of each reaction: QUESTION 1: QUESTION 2: OH OH LIAIH NaBH₁

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Q: The loss of electrons results in the formation of Negative ions Negative nonmetals Positive…

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Q: How many significant figures are in the following measurement: 0.00204 g Type your answer...

A: Note: According to our guidelines we are supposed to answer only one question.  Kindly repost other…

Q: Calculate the number of grams of sodium in 2.20 g of each sodium-containing food additive.

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Q: Predict products of the McLafferty rearrangement for the molecule . Provide high quality drawings…

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Q: Use the density value to solve the following problems:  a. A graduated cylinder contains 18.0 ml of…

A: a.) The new water level would be the sum of initial water level and volume of silver metal…

Q: How does decreasing the total energy of the system affect the stability of the pair of atoms in the…

A: As we know,  higher is the energy, less is the stability of bond.

Q: If a student accurately made a measurement of 3.1, which of the following rulers must they have used…

A: The solution of the above question are provided below ;

Q: Draw the Line Bond Structure for ammonia (NH3) Step 1: Count the total number of valence electrons…

A: To draw the line bond structure of the given molecule, we would proceed as given in steps.

Q: 38. Which of the following amino acids has an aromatic side chain? a. isoleucine b. valine c.…

A: Amino acids  molecules  combine to form proteins. Among  20 standard amino acids, there are 3 amino…

Q: The molecular speed of gas is related to the speed of sound, as sound vibrations cannot travel…

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Q: The freezing point of 48.06 g of a pure solvent is measured to be 45.44 ºC. When 2.04 g of an…

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Q: 1. 2. of 1.. Å 2. + CH₂OH a= Proton transfer b= Lewis acid/base c= Radical chain substitution d=…

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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.