Question 25 When a hydrogen electron transitions from n-5 to n-3, what is the change in energy (delta-E), in joules? (be sure to include the correct math sign, either- or + and the abbreviated unit. Use 4 sig. fig.

Q: A new band sensation is playing a concert and recording it for a live album to be released this…

A: Amplitude of a sound wave is also part of singing. When someone sings with a greater amplitude…

Q: What is the molecular weight of the gas? (hint: remember that PV=nRTPV=nRT) The molecular…

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Q: How many moles of Feg04 are required to supply enough iron to prepare 0.843 mol Fe203? i mol Fe304

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

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

Q: 46. Which of the following involves a decrease in entropy? A) the sublimation of solid CO2 into CO2…

A: The correct answer about entropy is given below

Q: Predict the major product for the following reaction. Predict the major product for the following…

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Q: 43. BaF2 is very slightly soluble in water with a Ksp = 2.4 X 105. Which of the following statements…

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: 7. The Ksp of several salts are listed: SRF2 7.9 x 10-1º, MgF2 6.4 x 10-º, PbCl2 1.6 x 10$, PbBr2…

A: Let solubility of each compound is S, which has highest solubility (more S value) = ? All are AB2…

Q: How many kJ of energy are needed to change 19.3 g of ice at 0.00 °C to water at 20.66 °C? Use a heat…

A: Given: Mass of ice = 19.3 g Initial temperature = 0°C Final temperature = 20.66°C The heat of…

Q: You need a 25% alcohol solution. On hand, you have a 450 mL of a 20% alcohol mixture. You also ha…

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Q: and 27oC is cooled to -48oC at 608 torr.  a. What is the final volume?  b.  How many moles of gas…

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Q: The motion picture Titanic described the tragedy of the collision of the ocean liner of the same…

A: The solution is given below -

Q: One of the oldest units for atmospheric pressure is Ib in.2 (pounds per square inch, or psi).…

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Q: Question 13 Which of the following reactions of alkenes is anti stereospecific? a) addition of HCI…

A: In this question we have to tell the which reaction of alkene is anti stereospecific.

Q: 5. A diatomic molecule A2 has a reduced mass of 1.5x10-23 g, a bond length of 150 pm, and a bond…

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Q: The density of Cr is 7.20 g cm3, It its unit cell is a cube with an edge length of 0.289 nm,…

A: Formula for this is Density = Mass of unit-cell / volume of unit cell.

Q: What is the volume of 2.50 g of H2 at STP? (Assume STP is 0 degrees Celsius and 1 atm pressure)

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Q: Br + Br2 Br Colorless Red Br, Br 2B12 Br Br Red Colorless

A: The reduced stability of these multiple bonds in the given reactions is the deciding factor for the…

Q: Question 6 of 12 A solid 30.2 cm block of KCIO: is heated in the laboratory and decomposes according…

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Q: Calculate the total binding energy in kJ per mole nuclide and in kJ/mol nucleons for the following…

A: To calculate the total binding energy in kJ per mole nuclide and in kJ/mol nucleons for the…

Q: Compare the solubility of lead chromate in each of the following aqueous solutions: Clear All 0.10 M…

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Q: The following skeletal oxidation-reduction reaction occurs under acidic conditions. Write the…

A: In this question we have to tell the the balanced reduction half reaction.

Q: Andol condensation t trans-esterification H. HO HO. To drops Piperidine…

A: An aldol condensation is a condensation reaction in organic chemistry in which an enol or an enolate…

Q: Most chemistry laboratories have balances that can weigh to the nearest milligram. Would it be…

A: Given,  Molecules of C18 H38 = 5.88E+18 molecules The mass of C18 H38 is:

Q: The following compound is the, enantiomer of 2-chlorobutane. H CI OR O T OS O it is not chiral

A: ->Enantiomer are the compounds having just opposite configuration . ->It a compound has chiral…

Q: 42 Answer true or false. 42.2 (f) In a solution that conducts electricity, cations migrate toward…

A: The answer is as follows:

Q: 17. For the reaction A(g) + B (g) = C (g), you know that Kc = 51.0 at a certain temperature. What…

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Q: Draw the bond-line structure of the compound (1R)-1-chloro-1-cyclohexylpropan-1-ol

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Q: In Part A of this experiment, you prepare 5 solutions of FeSCN2* [one of them is just a blank…

A: No of moles = Molarity * Volume (L)

Q: Current Attempt in Progress What is the mass defect for americium-241 if the mass of the nucleus is…

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Q: Calculate the half-life of a radioisotope if it decays to 12.5% of its radioactivity in 12 years.

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Q: The following reaction is endothermic: 30,g)= 20,g) If the reaction is at equilibrium, tell whether…

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Q: Which type of interaction from the diagram must be strong in order to dissolve a salt?  When…

A: Solution is made up of solute and solvent .Solute is present in small amount and solvent is present…

Q: Suppose a tank of oxygen-enriched air prepared for scuba diving has a volume of 11.04 L and a…

A: Partial pressure of oxygen can be used to calculate the number of moles of oxygen present in the…

Q: ich of the following is usually considered to be a weak acid? A) HCI B) HBr C) HI D) HF CH 26. Which…

A: (25) Given acids are  HCl, HBr, HI, HF    Among these acids HF is considered as a weak acid because…

Q: 5. State and variation theorem. prove

A: Answers are given as below:

Q: Q2 :- Calculate the value of the ionization constant, K, for aniline if the pK, is 10.5?

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Q: Explain the advantages of a digital signal over an analog signal.

A: A digital signal is a signal that represents data as a sequence of discrete values. A digital signal…

Q: Draw the structures of compounds M and N NaOEt HBr M ELOH

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Q: 100.0 cm3 water is titrated with 0.0049 M ascorbic acid solution. What is the analytical…

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Q: What is the amount of energy required (in KJ) to convert 100g of ice at -20 degrees to steam vapour…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: 44. Identify the class of compound for each of the following hydrocarbon derivatives. (а) CH,—ОН (c)…

A: The class of the compounds is: a- Alcohols

Q: 5. Base pairing in DNA is accomplished through A. disulfide bonds B. hydrogen bonding C. peptide…

A: Base pairing in DNA accomplished through

Q: 7. CH,O, + OH CH,O,+ H,O redox reaction (yes/no), species oxidized oxidizing agent species reduced…

A: 7. C2H4O2 + OH- -----> C2H3O2- + H2O  Here the oxidation states of different atoms at reactant…

Q: B. Draw the structures of the products for the following reactions. NO2 Br2 Fe AICI3 HNO3 H,SO4

A: Detail mechanistic pathway is given below to find out the major product

Q: What is the initial concentr ation of a 45.0ML N9NO2 Solution that bas been diluted to a Final…

A: By using    M1V1=M2V2,    I am giving my solution in step no. 2

Q: Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of…

A: Given mass of carbon (C)= 40.6 g Given mass of Hydrogen (H)=  5.1 g Given mass of Oxygen (O) = 54.2…

Q: Consider the reaction of methyl chloride (CH3CI) with NaN3 (nucleophile). What is the effect of…

A: Which one of the following is correct

Q: CH3 CH 3OH H3 C H2 CI Pd/C CH3

A:

Q: 4. When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose…

A: Given : Volume of water = 35 L                                = 35 × 10³ mL initial temperature of…