What is the half-life of a radioactive substance if after 5 years 95 percent of an initial amount still remains? O 67.6 years 87.6 years O 76.6 years 767 years

Q: Can anyone please answer this? How would you prepare 5L of 0.9% solution with the given density of…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: Determine the percent magnesium oxide in a sample of 0.3000g impure magnesium oxide titrated with…

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Q: CH₂Cl www

A: In this question, we will see the reaction mechanism for this transportation.  You can see the…

Q: Heating the oxetane below to 560°C gives two products A and B (Scheme 2) A + CI Oxetane Scheme 2 The…

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Q: C. Using the generic Michaelis-Menten plot below, describe the reaction's behavior in the following…

A: We know the michaelis menten equation r = (k2[E][S])/([S]+Km) Where r = rate of reaction [E]= intial…

Q: Balance the chemical equation below using the smallest possible whole number stoichiometric…

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Q: Why does adding a salt solution cause soap to precipitate?

A: Sodium salt of higher carboxylic acid is known as soap and has general formula RCOO–Na+.

Q: 47) Combination of two p-atomic orbitals give two molecular orbitals. Show the possible two…

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Q: What is the corresponding standard deltaG (AG° (in kJ units)) at 298.15 K for the reduction of Aut3…

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Q: 3.5 moles of methane reacts with 12 moles of oxygen gas in a combustion reaction. How many moles of…

A: In a balanced Chemical reaction, Limiting reagent is the one which has less value of:-…

Q: What is the solubility constant of magnesium hydroxide if 0.019g of magnesium chloride is dissolved…

A: Given that:  pH = 10  Mass of MgCl2 = 0.019g  M.w = 95.21g/mol  Moles of MgCl2 = 0.019g÷95.21g/mol =…

Q: Calculate the pOH of a 0.20 M solution of pyridine, C5H5N. The Kb value for C5H5N is 1.7 x 10-⁹. O…

A: we have to calculate the pOH of 0.20 M pyridine

Q: Write down the chemcial reaction that occurs for rechargeble batteries. Identify the reduction and…

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Q: What are  the limitations of using  molecular/size exclusion chromatography?

A: In SEC, mass is not measured so much as the hydrodynamic volume of the polymer molecules, that is,…

Q: What is the pH of a solution composed of 0.40M HOBr and 0.40M NaOBr. Ka of HOBr is 2.6x10-⁹ 9.12…

A: Given concentration of [HOBr] = 0.40M  [NaOBr] = 0.40M  Ka of HOBr = 2.6 * 10-9  To Calculate the pH…

Q: A solution of H₂SO4 is 0.1372 N. How many milliliters of 0.1421 N KOH solution are required to…

A: All the required calculations have been done in the following step.

Q: For butenafine, develop a synthesis that starts with napthalene and benzene

A: The solution is shown below

Q: What is the principle behind reverse-phase ion-pairing chromatography?

A: Reverse Phase ion chromatography use the principle of  Solute ions instead of molecules .

Q: 5. Sodium acetate and sodium propionate are poor soaps. Why?

A: Sodium acetate and sodium propionate are poor soaps. Explanation and reason given below.

Q: Ethylene glycol freezes at -5 deg C in water. What is the boiling point of the solution?

A: Given→ Freezing point of ethylene glycol in water = -5 deg C.            We have been asked to find…

Q: Consider the reaction between a 25.00 mL solution of 0.100 M HCI and 50.00 mL of 0.100 M NaOH.…

A: pH is greater than 7 is correct answer

Q: 2. Draw the product of the reaction of cyclopentanone with each of the following reagents: a.…

A: The correct answer is given below

Q: Provide the IUPAC name of the compounds

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Q: In the reaction given below, what type of reaction is used? * KOH Minor Major (cis + trans)…

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Q: Give the 9) (b) of the name Compounds given below LOH 애

A: Write IUPAC name of the given structure---

Q: A chemistry graduate student is studying the rate of this reaction: 2HI (g) → H₂(g) + 1₂ (g) She…

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Q: ton mpletion Status QUESTION 7 What is the final concentration when 297ml, of water is added to…

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Q: How many grams of KClO (90.55 g/mol) must be dissolved in 0.833 L of solution in order to obtain a…

A: We have to calculate mass of KClO for the given solution

Q: An experiment was conducted to measure the standard reduction potential, Ered of magnesium, Mg (s)…

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Q: 4. In an isobaric process, the heat received by any system is converted to work. 5. A system…

A: 4. False,  (Isothermal process) 5. True 6. False,  (Adiabatic wall) 7. True

Q: At what position, and on what ring, would you expect the following substance to undergo…

A: Please follow the discussion in ghe following step.

Q: Determine if the following reaction is spontaneous at 298K Enthalpy = -269.3kJ/Mol Entropy =…

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Q: 5. Glutaraldehyde is a germicidal agent that is sometimes used to sterilize medical equipment. In…

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Q: A 5M NaOH solution means ___? A. 5g of NaOH in 100g of NaOH solution B. 5 moles of NaOH in 100 moles…

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

Q: Chemistry Identify and draw the symmetry elements for NH3

A: The symmetry elements of NH3 are E, 2C3, and 3 sigma-v.

Q: In the following reaction represented by the net ionic equation, the rate of reaction of CN– is…

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Q: A 20.12 mL aliquot of weak base that has a concentration of 0.40 M will be titrated with 0.34 M HCl.…

A: When avid HCl is added to weak base , it will give its conjugate acid.  So we would Calculate moles…

Q: Determine the percent ionization of HF if a solution of 2.5mol HF diluted to 1.0L has a hydronium…

A: Given,  Moles of HF = 2.5 mole  Volume in L = 1.0 L  [H3O+] = 0.013 M  Determine the percent…

Q: 4. Draw a stepwise detailed reaction mechanism for the following reaction. OH H₂O+ + C6H5CHO -C6H5 +…

A: Diol is protected by using aldehyde in acidic conditions.

Q: Determine the concentration of ferric ion that can exist in a solution at pH 3. The Ksp of ferric…

A: Given that : pH = 3 pH + pOH = 14 pOH = 14 -3 = 11

Q: Write down three differences between GC and HPLC (GC = gas chromatography) (HPLC =…

A: 1. High Performance Liquid Chromatography uses a liquid mobile phase and gas chromatography uses a…

Q: Question 9 Activated carbon filters remove contaminates by ion exchange mechanism. A True B False…

A: (9) Activated carbon filter based on the principle of adsorption.  Adsorption is the phenomenon in…

Q: Choose the IUPAC name of the compound below. G O 5-Methyl-3-propyl-2-hexanone O 3,3-Dimethylheptane…

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Q: Detail interpretation of of 3-nitrochalcone

A: A question based on IR spectroscopy that is to be accomplished.

Q: Calculate the water solubility of silver chloride in g/L. The Ksp is 1.8x10-¹⁰ and the MW 143.4…

A: Silver chloride = AgCl Ksp = 1.8×10-10

Q: The following reaction is at equilibrium and being monitored by a chemist: . 2NOF (g) 2NO(g) + F₂…

A: In this question, we want to determine the equilibrium constant value for the given reaction…

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Q: One component of sour milk is lactic acid (HC₃H₅O₃). What is the pOH of 0.30M lactic acid? (Ka =…

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Q: A student finds the average Keq to be 370. (a) Calculate the approximate [FeSCN²+]/[SCN¯] in Part 3…

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Q: 7) What is the correct IUPAC name of the molecule below ? H2 .C. H3C. CH3 ČH3 A) 2-methyl-4-pentanol…

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.