Calculate the energy of an electron in n=2 state of a hydrogen atom. Give your answer in attojoules (aJ).

Q: 1.25 atm of C2H4 and 1.03 atm of O2 are combined in a sealed reaction chamber. During the reaction,…

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Q: For H-NMR, would the CH3 hydrogens adjacent to carbonyl group be more downfield or CH2 group protons…

A: This can be explained as:

Q: 3. Use the graph to answer the following questions Calibration Curve Absorbance 1.00 0.80 0.60 0.40…

A: We are given a graph of absorbance verses concentration, and we are to answer the questions based on…

Q: Suppose a piece of silver jewelry contains 7.78×1022 atomsatoms of silver (AgAg).

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Q: J Ph, Ph H Ph Ph-P= Ph/ H ?

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Q: 3. Calculate AH for the reaction 4 NO(g) + 6 H2O (g) -4 NH (g) + 5 O: (g), from the following data…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: closed system initially contains 1.5 x 10-2 M of molecular hydrogen and 2.5 x 10-2 M of molecular…

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Q: 16. Determine the number of grams of carbon dioxide in a 450.6 mL tank at 1.80 atm and -50.5 °C.…

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Q: When 10.00-mL of 0.8000 M propionic acid (CH3CH2COOH), is titrated with 0.2000M NaOH what is the pH…

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Q: 3. An alternating copolymer is known to have a number-average molecular weight of 250,000 g/mol and…

A: Given: Number-average molecular weight= 250000 g/mol  Degree of polymerization= 3500  One repeating…

Q: Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon…

A: First we need to use these reactions to get the reaction of formation of dimethyl ether from carbon…

Q: etermine the [H*], pH, and pOH of a solution with an [OH-] of 7.8 x 10-6 M at 25 °C. H+] = H =

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Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into…

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Q: The Ka for the weak acid HA is 4.84 x 10^-9. calculate the Kb for conjugate base A- at 25 °C. Report…

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Q: Which is an enol?

A: Enol is a type of organic compound that contains a  hydroxyl group directly bonded to carbon atom…

Q: Use this diagram to complete the table below. What is the energy of the electron in the ground…

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Q: Which functional groups are present in serotonin (see below)? Select all that apply. NH₂ НО. 0000 ZI…

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Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of…

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Q: Aqueous hydrobromic acid(HCl)  will react with solid sodium hydroxide(NaOH) to produce aqueous…

A: Here we are required to find the minimum mass if hydrobromic acid left over by the chemical…

Q: predict if the following solution is optically active by writing active or inactive. Can some one…

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Q: A 0.100 M solution of KNO2 has a pH that is a pH that is a) Less than 7 b) Equal to 7 c) More than…

A: pH = It is the measurement of H3O+ ion of a solution  pH = -log [H3O+] For basic solution pH > 7…

Q: 4.) Which of these substances is the least soluble in water and why? a. CH3(CH2)2CH2OH b.…

A: Alcohol are polar organic compounds having hydroxyl group attached to the parent hydrocarbon . The…

Q: Which of the following sets of quantum numbers n, l, ml, ms correspond to a valence electron in a…

A: we have to select the correct set of quantum numbers for the valence electrons of arsenic

Q: 8) AHvap is a way to measure intermolecular forces quantitatively. Calculate the amount of energy…

A: we have to calculate the total energy needed to cool water

Q: Which reagent(s) adds HBr to a double bond in a non-Markovnikov fashion via a radical mechanism? A.…

A: To answer: Which reagent(s) adds HBr to a double bond in a non-Markovnikov fashion via a radical…

Q: The temperature of a sample of aluminum increased by 24.9 °C when 269 J of heat was applied. What is…

A: we have to calculate the mass of the sample

Q: Question 6 What is the pH of a 0.563 M solution of Nal? O 10.14 O2.14 3.86 O 7,00 Question 7 Which…

A: For question 6, we have to find the pH of a 0.563 M solution of NaI. For question 7, we have to find…

Q: Show a detailed mechanism for the following reaction. Include all arrows and steps. H₂C- • CH₂ - OH…

A: it is nucleophilic substitution reaction. where nucleophile is OH-

Q: The first question/screenshot is the beginning structure, but I don't need help on that anymore. It…

A: Concept based on the organic chemical reactions and their mechanisms. Each and every step in the…

Q: Calculate the standard enthalpy of reaction, Δ?∘rxn,ΔHrxn∘, of each of the given acid–base…

A: The standard enthalpy of the reaction is calculated as- ∆Hrxn°=∑∆Hf°(products) -∑∆Hf°(reactants)

Q: 12) The First-order rate constant for the reaction of methyl chloride (CH3C1) with water to produce…

A: First rate constant , K1= 0.332 s-1  First temperature,  T1 = 25°C =298 K (as 0°C = 273 K)  Final…

Q: A chemist prepares a solution of calcium bromide (CaBr₂) by measuring out 34.7 μmol of calcium…

A: This question is from chapter Solutions. We are given moles in micromole and volume in millilitres.…

Q: water react to form acetylene and calcium hydroxide: CaC₂(s) + 2 H₂O(g) → C₂H₂(g) + Ca(OH)2(s) In…

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Q: What is the density of molecular hydrogen gas (in g/L) at 20.0 °C and a pressure of 760 torr?

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Q: total ionic equation: Cu²+ (aq) + SO2 (aq) + Mg(s) → Mg²+(s) + SO²¯ (aq) + Cu²+ (aq)

A: Given , Incorrect equation : Cu2+(aq) +SO42-(aq) +Mg(s) →Mg2+(s) +SO42-(aq) +Cu2+(aq)

Q: What is the major organic product obtained from the following reaction? NBS Br hv What is the major…

A: Here we have to write the major product formed  in the following given  reactions.

Q: I atm. cylinder is also submerged in a large insulated water bath. (See sketch at right.) From…

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Q: 2. When an electron is ejected from the surface of a metal, it is moving with a speed, therefore it…

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Q: A chemist makes 0.800 L of mercury(II) iodide (HgI₂) working solution by adding distilled water to…

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Q: Calculate the volume in liters of a 0.0337M nickel(II) chloride solution that contains 3.00 mol of…

A: Molarity is defined as number of mole of solute divide by volume of solution in liter

Q: A gas storage cylinder in an ordinary chemical laboratory measures 4.4 cm wide and 18. cm high. This…

A: Width of the gas cylinder, d = 4.4 cm  Height of the gas cylinder, h = 18 cm  Initial volume of the…

Q: 1. For the HCP crystal structure, show that a) The volume of the unit cell is given by 6√3R²c. b)…

A: The structure of the HCP unit cell is shown below,  Figure 2 is the large representation of the…

Q: Q1) Make two disconnects make 2 disconnects to your chosen structures and suggest reactions that you…

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Q: > ▼ Part B - Equilibrium shifts for slightly soluble compounds The reaction for the formation of a…

A: According to Le-Chatelier's principle when an equilibrium is disturbed then it shifts in the…

Q: Draw the product of the substitution reaction shown below. Ignore the inorganic byproducts.

A: Given : structure of reactant. Tip : Sn2 reaction is occurring.

Q: Example: Calculate AP, 4Tf, Tb and TT for solutions which are 1% by weight in Benzene of solutes…

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Q: Question 12 A buffer is made by combining 237 ml of 0.125 M acetic acid (HC₂H₂O₂) with 425 mL of…

A: we have to calculate the pH of buffer solution

Q: Drug A dissociates into four ions to the extent of 70%. How much sodium chloride do you need to…

A: The ionization, i of the drug can be calculated as the product of % ionic dissociation and number of…

Q: part 2 I did not understand how to solve im confused about the 2.5 2/mL

A: ♦  2.5 g/mL           We have to convert g/mL into g/L .

Q: A 1.00-L flask at 23 °C contains 0.0388 mol of N2, 0.147 mol of CO, and 0.0803 mol of H2. What is…

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