The longest wavelength of light that causes electrons to be ejected from the surface of a copper plate is 243 nm. What is the maximum velocity of the electrons ejected when light of wavelength 200. nm shines on a copper plate?

Q: 8. It is sometimes said, "A noble gas configuration is especially stable so atoms or ions with such…

A: Noble gas configuration is more stable due to completely filled orbital.  In case of Na+ = 1s2  2s2…

Q: 57.2 mmol SO3 m(SO3)=

A: 1 mol  = 1000 mmol  So, 57.2 mmol SO3  * 1 mol / 1000 mmol = 0.0572 mol

Q: Convert 8.40 g/cm2 to mg/mm2.  Round your answer to 1 decimal place. No units needed.

A: Unit conversion is a multi-step process that involves multiplication or division by a numerical…

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A:

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A:

Q: Select all of the correct statements about reaction quotients and equilibrium constants from the…

A: The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical…

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A:

Q: = PH pH = 4.389 PK₁ pH = 4.874 pH = 5.339 Using the equation to calculate the quotient [A]/[HA] at…

A:

Q: Which of the following is/are correct resonance structure(s) for compound A? ď A ooroo A B I and II…

A: Resonance structure: If the Lewis structure of a molecule or ion cannot explain by a single…

Q: The following question is about signifiant figures. So I have 17.82 mL of carbon tetrachloride with…

A:

Q: NO NEED TO SHOW ANY WORK JUST FINAL ANSWER AS QUICKLY AS POSSIBLE! Incredibly, the ozone layer in…

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Q: 11 10 HSP-03-874 9 00 8 OH 7 6 5 ppm 3 2

A: We have to assign the 1H NMR spectrum of Butan-1-ol. Introduction: Those protons which are…

Q: what intermediate is formed in the reaction below?

A:

Q: A sphere has a density of 13.6 g/mL. Calculate the volume in mL if the sphere weighs 5.0 g

A:

Q: For this heterogeneous system 2 A(aq) + 3 B(g) + C(1) 2D(s) + 3 E(g) the concentrations and…

A:

Q: How many milliliters of 1.07 M HCIO4 should be added to 1.90 g of imidazole to give a pH of 6.993?…

A: use Henderson equation, pOH = pKb + log [salt][base] pH + pOH = 14pKa + pKb = 14

Q: Write the symbol for an atom/ion with the following information  the ion with a 3+ charge, 28…

A: An ion has 3+ charge with 28 electrons and 40 neutrons .We have to find out the symbol for an…

Q: Problem 2.15 Ethyne has a pKa value of 25, water has a pKa value of 15.7, and ammonia (NH3) has a…

A: Ethyne has a pKa value of 25, Water has a pKa value of 15.7, and  Ammonia (NH3) has a pKa value of…

Q: A reaction between the substances A and B (3A + 2B2 ⟶ 2C + D) gives the following data:

A:

Q: Determine half-life, order, and k from concentration-time data. The following data were collected…

A: Recall the given reaction,               CH3OCH3 g  →  CH4 g  +  H2 g  +  CO gWe have to find out…

Q: Name the functional group shown in each molecule below. The first answer has been filled in for y…

A: we he to identify the functional group in the given molecules

Q: For which of the following values of equilibrium constant does the reaction go farthest to form the…

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Q: Provide the IUPAC name for the condensed structural formula shown here. H₂C H₂C. H₂C CH₂ H₂C. -HC…

A: we have to provide the IUPAC name for the given compound

Q: What are the units of A in the Arrhenius equation? If the units for k are M-1s-1

A:

Q: 5. 6. CH O,N. CI СООН COOH CN

A: IUPAC nomenclature of carboxylic acid: • Identify the longest continuous carbon ring • Identify the…

Q: H Η H H Η Η

A:

Q: 1. Explain why egg whites and milk are used as antidotes for heavy metal poisoning.

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Q: 132 Identify the structure of the oxygen-containing compound with m/z= 74 (M¹), 56 and 31 from the…

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Q: CP Solution A Solution B. Solution C PH (2 points each) 6.88 4 10.89 pOH (2 points each) 1 5 3.11…

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Q: The rearrangement of cyclopropane to propene at 500 °C is first order (k = 6.70x10-4s ¹). (CH₂)3(9)…

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Q: For the reaction: 2 NOCI(g) 2 NO(g) + Cl2(g), the rate constant values were determined at two…

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Q: This is to be used for reference. Scientists ask: What mass of ethylene glycol (C2H6O2, molar mass =…

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Q: A) Br. B) Br O Br

A: Given,

Q: A sample of 100 Unit/L is diluted 1 in 10, what is the concentration of the final solution?

A: The formula of dilution is  M1V1 = M2V2  Where  M1 and M2 are initial and final concentration V1 and…

Q: Why it is necessary to measure the physical properties of the product?

A: Physical properties are properties, that can be measured with out changing chemical identity of the…

Q: Using the data in the table, determine the rate constant of the reaction and select the appropriate…

A: Here the reaction is given , A + 2B ⟶ C + D . We know the Rate law of a chemical reaction can be…

Q: The gas phase decomposition of dimethyl ether at 500 °C CH3 OCH3(g) →→ CH4 (9)+ H₂(g) + CO(g) is…

A: Chemical kinetics can be defined as the branch of chemistry that deals with rates of chemical…

Q: What mass of Ni metal can be plated on to the cathode from a NiSO4 solution using a current 8A for…

A: First we would write reaction at cathode to produce Ni metal.  Then using the current and time , we…

Q: A mixture of 0.01076 mol of Cl₂, 0.04718 mol of H₂0, 0.02718 mol of HCl, and 0.01676 mol of O₂ is…

A:

Q: Part IV. Preparation of 100 mL 25% Solution X Materials: Solution X, measuring cylinder, distilled…

A: 100 ml of 25% solution of x is need to prepare Volume of solution x= 25% of 100 ml = 25 ml  So…

Q: 2 Consider the following peptides: (a) Lys-Leu-Met-Phe-Gln (b) lle-Gly-Thr-Asn-Val (c)…

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Q: 3. Both methylcycloheptane and ethylcyclohexane have the same molecular mass. Explain how is it…

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Q: In a laboratory experiment, students synthesized a new compound and found that when 11.63 grams of…

A: Consider the given information is as follows; Mass of compound = 11.63 gVolume of the solution =…

Q: Part II. Preparation of 50 mL 0.5% NaCl solution Materials: NaCl, weighting boat, spatula, balance,…

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Q: Which of the following orbital diagrams represent the ground state configuration for a neutral…

A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the…

Q: 63. Apply Graph mass versus volume for the data given in the table. What is the slope of the line?…

A: Given,Volume cm3 : 7.5 , 12 , 15 , 22Mass g : 24.1 , 38.5 , 48.0 , 70.1Required,…

Q: The gas phase decomposition of hydrogen peroxide at 400 °C H₂O₂(g) → H₂O(g) + O₂(g) is second order…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: how will you aspirate 3mL distilled water using a 5 mL "to blow out pipette"?

A: A question based on general chemistry that is to be accomplished.

Q: half-life of 25.3 s. How long does it take for the concentration of the reactant in the reaction to…

A: Given,  Half life time (t1/2) = 25.3 s 1---1/2---1/4---1/8 So, to fall concentration 1/8 it requires…

Q: Name the following molecules. Use lowercase only, except for Roman numerals. Use spaces in between…

A: The names of all the compounds have been provided in the picture below

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.