How long will it take for 1.800 mg of promethium-144 to decay to 0.1125 mg? The half-life is 17.5 min. of promethium-144

Q: 20.0-g piece of iron and a 20.0-g piece of gold at 100.0 °C were dropped into the same beaker…

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Q: Draw the major product for this reaction. Ignore inorganic byproducts. HgSO4, H₂O

A: Given starting compound is non terminal alkyne.  Here in this reaction non terminal alkyne react…

Q: ¹H-NMR 04 broad singlet, 1H 13 C-NMR 60 triplet, 2H 3 50 CH₂ CH3 CH3-CH-CH₂-CH ₂ - OH CH nonet, 1H…

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Q: Provide the synthesis for the following Br NH₂

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

Q: What is the pH of a solution with an H+ concentration of 3 x 10-6 Molar

A: pH is equal to the negative logarithmic of hydrogen ion concentration             given.        H+…

Q: helium balloon has a volume of 55.0 liters at 37.2 C and 648 mm Hg of pressure. To what volume will…

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Q: lance the reactions or half-reactions in redox reaction and determine juivalent mass (EM) of the…

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Q: Provide the correct systematic name for the compound shown here. H₂C CH3

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Q: An Ion is a charged atom, # protons ≠ # electrons. On page three, paragraph one states, “The prefix…

A: The given image is showing the ionic bond formation between the atoms of Aluminum (Al) and chlorine…

Q: Using the following equation how many grams of carbon dioxide do you get from 155 g of glucose:…

A: One mole of glucose react with six mole of oxygen and produced six mole of carbon dioxide

Q: 206Pbfor A rock contains 0.688 mg of every 1.000 mg of 238 Upresent. Assuming that no lead was…

A: We need to find the age of rock using the data provided. This question belongs to radioactive dating…

Q: CH4, is oxidized to CO2 in the presence of O2. How much free energy is released per mole of CH4…

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Q: Draw the major product of this reaction. Ignore inorganic byproducts. Br2 (1 equiv) Select to Draw

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Q: Show a picture (in jpg) of a "regular pentagon" using any computer software

A: Every side of a regular pentagon has the same length, and its five angles are same.

Q: What is the electron configuration of Se?

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

Q: Is there a way without Birch Reduction?

A: We have to synthesis the given molecule from ethene, without using Birch reduction. Introduction:…

Q: Predict the major products of both organic reactions. Be sure to use wedge and dash bonds to show…

A: -> In acidic medium alkene form a carbocation then nucleophile added to most stable carbocation.…

Q: hat balanced equation is the following equilibrium expression derived from? P HI D PH₂P 12 H₂(g)…

A: Kp is equilibrium constant and it's equal to pressure of product divide by pressure of reactants

Q: One way to measure temperature in some applications is to monitor the gas pressure in a rigid,…

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Q: Which of the following molecules would exhibit the most ideal behavior? A) H₂ B) 0₂ C) N₂ D) He E)…

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Q: A chemist needs 16.94 mL of 1.067 M HCl. What volume in mL of 3.971 M HCl must be diluted in water…

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Q: A buffer solution was prepared by adding 4.98 g of sodium acetate, NaCH, CO₂, to 2.50 x 10² mL of…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: 8) The optimum pH for the activity of trypsin is about A) 2.0 B) 4.0 C) 6.5 D) 7.4 E) 8.0

A: As per bartleyby guidelines i answered only first question so please don't mind and post other…

Q: 4. Predict the product for each reaction. Note that some have two reactions. You can give the final…

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Q: 4 HCI(g) + O₂(g) 2 Cl₂(g) + 2 H₂O(g) How many liters of HCI gas do I need to produce 37 liters of…

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Q: At higher elevations, the boiling point of water is lower because the atmospheric pressure is lower.…

A: Specific heat capacity of water = 4.2 j/gc

Q: Calculate the pH in a titration of 40 mL (0.040 L) of 0.100 M barbituric acid (Ka = 9.8 × 10−5) with…

A: We will first calculate the concentration of acid and salt. Salt is formed when we add KOH to the…

Q: Predict the electron-domain and molecular geometries for a. SeCl2, b. CO3-.

A: VSEPR theory: The structure of a molecule can be determined by using the VSEPR theory. According to…

Q: How many grams of Kr are in a 6.22 L cylinder at 97.8 °C and 9.95 atm? mass: g

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Q: Under anaerobic conditions, glucose is broken down in muscle tissue to form lactic acid according to…

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Q: A student experimentally determines the Ksp of silver sulfide, Ag2S, to be 1.73x10-1 at 237.5°C.…

A: Given :  Ksp of Ag2S = 1.73 x 10-1

Q: 1. Heartburn is typically caused by eating acidic foods or otherwise having conditions in the…

A: Dear student, Since you have asked multiple questions, we will solve the first question for you. If…

Q: A chemist needs 19.89 mL of 1.36 M NaOH. What volume in mL of 3.29 M NaOH must be diluted in water…

A: To solve the given question, we need to use dilution law to calculate the required volume of 3.29M…

Q: product or products in each of the following reactions: H OH H A) B) H- Heat „faſ". CH₂ C)…

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Q: Predict the major product for this reaction. Ignore inorganic byproducts. H3O+

A: Given reaction is hydrolysis of terminal alkyne.  Water is added across carbon carbon triple bond.…

Q: A sample of gas at 2455 torr is cooled from 150.0 °C to 100.0 °C. Assuming the volume is constant,…

A: Given :  Initial temperature (T1) = 150 °C = 423 K  Initial pressure (P1) = 2455 torr  Final…

Q: 5. Diagram the resonance forms of the following: (a) HNSO; (b) F₂NNO; (c) O₂CCO₂²

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Q: Where did the number 0.001316 atm come from?

A: The number 0.001316 come from the conversion formula.  To convert mm Hg to atm use the conversion…

Q: Draw the organic product(s) of the following reaction. 109. NaNH,,NH:()) H-CEC-H

A: Acetylene reacts with sodamide(NaNH2) and gives sodium acetylide and ammonia.

Q: Compound :0=0-0: :CI-S-CI: :CI-Be-CI: :0=s=0: Electron pair geometry |||||| Molecular geometry

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Q: Given the following substances, if the substance is ionic, correctly match the ions from which it is…

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Q: ropose a mechanism for the following conversion: NH₂ CI

A: The substrate in which leaving group and nucleophile present that will give intramolecular…

Q: A scientist had a protein was provided at 1g/L. It had a molecular weight of 20,000 g.mol. What is…

A: Given: mass of protein = 1g Molar mass of protein = 20,000 g/mol Volume of solution =  1L Molarity…

Q: What is the molar mass of an unknown gas with a density of 10.1 g/L at 4.00 atm and 35.0 °C?

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Q: The following compound is O chiral meso O achiral but not meso

A: Stereochemistry is branch of chemistry in which we deal with three dimensional arrangement of atoms…

Q: A voltaic cell utilizes the following reaction and operates at 298 K. (a) What is the emf of this…

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Q: 8. Circle and label all functional groups in the following molecules. a. b. j d. HO H C HO 910 H3C O…

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Q: 2D2L J 1 Russell 2000 -1.51% Ch. 1 Introduction -... Aktiv Chemistry Connect-Bio Google Docs CG…

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Q: If 139 mg of NaCl (MM=58.44 g) is dissolved in 230.95 L of water. What is the concentration of Na+…

A: Given:- mass of NaCl = 139 mg = 139 × 10-3 g = 0.139 g Volume of water = 230.95 L Since density of…

Q: Provide the major product(s) from the following reaction.

A: In this question, we will draw the structure of the major organic product which is formed from…

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.