Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is 44.5 days. How much time is required for the activity of a sample of iron-59 to fall to 29.6 percent of its original value? days

Q: Can you please explain how you got the structural formula

A: The explanation to obtain the structure is needed to be provided.

Q: Identify the SYSTEMATIC name of the molecule that is illustrated in this item." H-C O…

A: ->for systematic naming we see the position of substituents attached in alkane chain . ->Then…

Q: 2. Find the AH for the reaction below, given the following reactions and subsequent AH values:…

A: Given equations are :  1). 2NaCl (s) + H2O (l) ---------> 2HCl (g) + Na2O (s) , ΔH1 = 507 KJ  2).…

Q: What is the molarity of a solution in which 150g of CaO are dissolved in 1900ml of solution?  (MW:…

A: Given :-  Mass of CaO = 150 g  Volume of solution = 1900 mL  MW : Ca = 40g/mol, O=16g/mol  To…

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Q: Blank 1 is a phenomenon in which the dispersed particles of a colloid cannot be separated by…

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

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Q: led roasting) to form solid tetraarseni koxide (As406), which is then reduced bon: As4 s) = As4(9) +…

A: Effect of change in concentration, temperature ,pressure,  volume etc. is determined by Le-Chateleir…

Q: 6. Calculate Kc for 2N,O4e) + 30zle) → 2N,0 (2 K=? using. (E) Reaction 1 2N218) + Ozle) * 2N,0 (e)…

A: Given: 2N2g+O2g⇌2N2Og; K1=1.2×10-35 ......(1)N2O4g⇌2NO2g; K2=4.6×10-3 ......(2)12N2g+O2g⇌NO2g;…

Q: Question 26 Which of the following molecules best describes the IR spectrum given with a molecular…

A: C5H11NO = DBE = 5 - (11-1/2)+1 = 6-5 = 1 . The compound is pentanamide (Primary amine).

Q: Given that the mobile phase conditions of the experiment use a 70% acetonitrile:30% methanol mixture…

A: Given the mobile phase conditions of the experiment which use a 70% acetonitrile:30% methanol…

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A: The half-life of a reaction is the time taken for the reactant to reduce to half its initial value…

Q: What is the titer (expressed in milligrams per milliliters) of a solution of oxalic acid dihydrate…

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Q: | Pari B: The Nernst Equation: Zn Zn I CuCu (Prior to adding NH,OH) -1./04V 1. -1,086V E Zn ZnlCutCu…

A: Solution- Data given- E0cell = -1.104 v To find - Emf of Cell and Concentration of [Cu2+] and [Zn2+]

Q: The activation energy for the gas phase decomposition of 2-bromopropane is 212 k).…

A:

Q: BALANCING REDOX REACTIONS USING THE CHANGE IN OXIDATION NUMBER METHOD   1. PbO2 + HBr  >  PbBr2 + O2…

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

Q: During the experiment, when calculating for  ΔH using the formula  ΔH = C x ΔT, can we calculate the…

A: Calorimetry is based on the principle of conservation energy, i.e. the total heat lost by the hot…

Q: Esters are the major product of an alcoholysis reaction with a carboxylic acid derivative.  True or…

A: Alcoholysis is the reaction of alcohol with organic molecule like carboxylic derivative. Carboxylic…

Q: 100 122 2876 2977 1194 liquid film sample 1737 1166 4000 1500 2000 wavenumber cm1 3000 1000 500…

A: C6H12O2 (DBE = 6- (12/2)+1 = 7-6 = 1. 3500 to 3000 cm-1 hydroxy stretch is absent. Therefore the…

Q: Barium chloride is reacted with sodium sulfate to produce barium sulfate and sodium chloride. How…

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

Q: For the decomposition of nitrosyl bromide at 10 °C 2 NOBR 2 NO + Br2 the average rate of…

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Q: Calculate the mass of glucose required to prepare 200 ml of a 25% (m/v) glucose (C6H12O6) solution.…

A: Volume = 200 ml  Mass by volume percent = 25 %  Mass of glucose = ?

Q: Molecular vibrations are due to periodic motions of atoms in molecules, and include bond stretching,…

A: Atoms in a molecule vibrates in different mode i.e. stretching and bending in bonded state causes…

Q: 1- Asymmetric ethers are generally prepared from the reaction of an alcohol molecule with a…

A: Since you have asked multiple questions, as per guidelines we will solve only first one for you.…

Q: Consider the following system at equilibrium where K. = 77.5 and AH° -108 kJ/mol at 600 K. co (g) +…

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Q: MW (mg/mmol) Density (mg/uL) Amount used vanillin 152.15 XXXXX 400.0 mg 102.09 1.08 500. 0 µL acetic…

A: Given that, the molar mass of acetic anhydride is 102.09 g/mol.  The density of acetic anhydride is…

Q: The specific heat of nickel is 0.444 J/g 0C. If 50 J of heat is added to 32.3 g sample of nickel at…

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Q: He discovered that coal tar's major components were aromatic hydrocarbons, a class of compounds…

A: 1. He discovered that coal tar's major components were aromatic hydrocarbons, a class of compounds…

Q: Draw the Lewis dot structure for CBr2F2 .   Choose the answer below that gives, in this exact…

A: Given :-  Chemical formula = CBr2F2  To determine :-  Lewis dot structure for CBr2F2  (I) number of…

Q: 23 The rates of many reactions approximately double for each 10°C rise in temperature. Assuming a…

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Q: How many grams of nitrogen are present in a 0.25 g sample of adrenaline, a hormone secreted into the…

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Q: Suppose that the total mass of the reactants ina chemical reaction was 100.00000 g. How many…

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Q: determine the value of Ksp for Zn3(PO4)2 by constructing an ICE table.

A: Let molar solubility of Zn3(PO4)2 is equal to " s" mol/ liter.....

Q: (c) electron capture by molybdenum-93 O 93 je+2 Nb Mo + _¡e → Nb ie+ Te He + 20 Zr Мо > 42 O 93 42…

A: ->From electron capture atomic number decreases by one unit. ->From positron emission atomic…

Q: When 25.0 mL of a 8.39x10 M potassium phosphate solution is combined with 12.0 ml. of a 4.85X10M…

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

Q: Identify the SYSTEMATIC name of this aliphatic hydrocarbon. * cis-1,2-diisopropylcyclopropane…

A: The systematic name of the aliphatic hydrocarbon is:

Q: How many gallons of octane, C3H18. having a density of 0.703 g/cm?, would have to be burned to…

A:

Q: How do you call the part in the colling curve with constant composition? O isobar O isomer O…

A: Answer - The correct option is (C) isopleth Explanation - According to the question - A cooling…

Q: Calculate the pH of a urate buffer solution that contains 500.0 mL of 0.5506 M of uric acid and…

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Q: Consider the following equilibrium system: 302 (g) 5 20 3 (g) At a particular time, the rate of O…

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Q: nyl-2-decacen-6-yne nyl-2-dodecen-6-yne nyl-10-decacen-6-yne nyl-10-dodecen-6-yne

A: The iupac nomenclature, first select the longest parent carbon chain which must include main…

Q: Based from the electrochemical series of metals, what are the implications if a metal has a very…

A: Here we have to write implications if a metal have very negative redox potential.

Q: Calculate the root mean square velocity, in m/s, of Cl2 at 273.0 K. Assume ideal gas behavior

A: Molar mass of Cl2 is 70.906 amu

Q: A voltaic cell is set up with copper and hydrogen half-cells. Standard conditions are employed in…

A: Given :  Ecell = 0.49 V  PH2 = 1 atm  [Cu+2] = 1 M

Q: What is the process of seeding, as it applies to recrystallisation? What purpose does it serve?

A: The process of seeding is defined as the addition of crystal of pure substance into saturated…

Q: ,) A gas sample occupies a volume of 20.0L at 25°C and 760 torr. At what temperature in °C will the…

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Q: Atomic Mass

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Q: At 20 °C, the following concentrations were found for the gases in an equilibrium mixture for the…

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Q: (b) alpha emission from einsteinium-252 Es + -{ e → jet 252 252 99 Cf 98 252 Es → 99 252 e + 100 Fm…

A: Alpha emission is a type of radioactive decay in which an alpha particle is emitted.  General…

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.