The half life of Bi–210 is 5 days. In what period of time would the activity of a given sample of isotope be reduced by 20%?

Q: Use the following empirical expressions for the molar heat capacities of solid, liquid and gaseous…

A: Given, molar heat capacities are C⏜pR = -0.2985 +2.896×10-2T-8.6714×10-5T2 +1.703×10-7T3; 10…

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Q: Which electrons below did not follow the Pauli exclusion principle? 1 11 1] 1 四四四 1 1 1 四四回 1 1 1 1…

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Q: Ph (s. 25°C, 1 atm) Ph (s. 42.5°C, 1 atm) Ph (1, 42.5°C, 1 atm) Ph (1,181.4°C, 1 atm)…

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A: Given statement is to be identified whether it is true or false.

Q: Explain the relationship between the decay formula N=N0(1+r)t and the formula for determining…

A: Dear User ! The formulae for decay and half life given along with the question seem to be…

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Q: What are the values of R, Z, D and composition of P? 99%C3 1% C, 96%C2 3% C3 1% C. R F=100 kg 40% C2…

A: Given: The hydrocarbons are separated in the distillation column. In the 1st column, F is separated…

Q: None

A: Step 1:Neutron flux density is a crucial parameter in nuclear reactors. It represents the number of…

Q: A new structural application uses partially stabilized zirconia with equimolar (equal molar amounts)…

A: For a 5wt% CaO, we use the below equation

Q: 3) Consider a binary, multi-stage distillation column. The molar enthalpies of saturated vapour and…

A: given = hl = 6.0 KJ/mol hV = 41 KJ/mol CP,l = 68 J/mol.K and CP,V = 22 J/mol.K WKT quality of feed…

Q: The temperature-dependent molar heat capacity of sulfur dioxide gas is given as: Cp,m = a +bT+ c/T²…

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Q: Self-test 11.4 The following data for an aqueous solution of a macromolecule were obtained at 20°C…

A: Given, We construct a table of values of 1R(θ) and (sin2θ2)/(R(θ)) should be a straight line with…

Q: fX) = X+ X-3x-3=D0 (1,2) Use the eguation once with the Bisection method and once with che False…

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Q: Hw: 1 what is the half-life of a substance that decays to 25% of its original amount in 6 days ?

A: A radioactive substance decays by first-order kinetics. If mo is the initial amount of the…

Q: Calculate the work done by a sample of nitrogen that expends reversibly and adiabatically from…

A: Given data: V1 = 1 dm3 V2 = 3.6 dm3 P1= 57.4 kPa γ = 1.4

Q: 3. For this problem, please refer to the figure below for the Methanel (IYdoni Acid (2) system at…

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Q: DaatianA single vapar-liquid oquilibrium point for the water (1) anl Cystem is esperimentally…

A: Write the expression for modified Raoult's law as follows: γixiPisat = yiPγi = yiPxiPisat…

Q: 2) Number of Ideal Stages for a Hydrocarbon Distillation A four component mixture of ethylbenzene…

A: Component Feed Distillate Bottom  αi Ethylbenzene 0.06×80 = 4.8 4.8 - 1.25 p-xylene 0.4×80 = 32…

Q: Use the given molar solubilities in pure water to calculate K, for each compound. a. BaCro, molar…

A: Given: a) BaCrO4, molar solubility is 1.08×10-5M b) Ag2SO3, molar solubility is 1.55×10-5M c)…

Q: Hw 5) choose whether it would be spontaneous at all temperaturesS, sp high temperature, spontaneous…

A: In thermodynamics, a spontaneous process is a process which occurs without any external input to the…

Q: lease provide a brief explanation of why the below reading is 19.58. It’s a piece from video of a…

A: The image shown in the figure is used for titration and it is called Burette. As we know reading in…

Q: C. Write balanced equations for the following natural radioactivity processes: 1. Alpha Decay of U:…

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Q: 14.18. What is the half-life of a radioisotope if it decays to 12.5% of its radioactivity in 12…

A: Radioactivity decay happens in isotopes due to alpha, beta or gamma decay. However, gamma decay…

Q: QUESTION 2 Ra is 1.37 x 10-11 s 88 226 Ra has an activity of 1.06 x 109 atoms/s? 88 The decay…

A: GIVEN: Activity of 88226Ra = Activity R = 1.06 * 109 atoms/sec  Decay Constant 88226Ra = λ = 1.37 *…

Q: A. Solve the following problems and support your answers with explanation. 1. How many protons,…

A: Dear User! As per our authoring guidelines, we have solved the first three subparts here. We suggest…

Q: fuel/air mass ratio of the combustion of 80 moles toluene in air

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Q: Which of the following molecule/s shows paramagnetism? O A. H2 O B. C2 C. 02 O D. F2 O E. none of…

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Q: 5. Give the ground state electronic configuration of each of the following. You may abbreviate…

A: 5 (d) Given ion is Nd3+. Atomic number of Nd is 60. There are 60 electrons in Nd and 57 electrons in…

Q: For Netrogen(14). the average logarithmic energy decrement equal. and the median energy transfer…

A: Reason: For nitrogen average logarithmic energy decrement equal 1 and median energy transfer during…

Q: The general Ksp expression in terms of "S" (molar solubility) of FePO4 is: Select one: a. 10885 O b.…

A: Write the reaction for the dissociation of FePO4 as follows: FePO4  → Fe3+ + PO43- One mole of FePO4…

Q: The decay of U-238 to Pb-206 can be used to estimate the age of inorganic matter. The half-life of…

A: The decay of the U - 238  to Pb - 206 is used to estimate the age of the inorganic matter .The half…

Q: 1. The mass density of liquid argon at T = 143 K is Pm = 0.98 x 10³ kg/m³. Assume that the argon…

A: The distance of separation between two particles is calculated from the distance where the…

Q: Positron emission from "C, c → B + °e , occurs with release of 2.87 x 10"J per mole of "C. What is…

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Q: Cu has F.C.C structure, lattice parametres of 0. 3615 nm, 83.7 kj / m is requried to produce…

A: Given that, copper (Cu) crystallizes in face centered cubic (FCC) lattice. Lattice parameter, edge…

Q: In the laboratory, you are studying the first-order conversion of a' reactant X to products in a…

A: The given reaction is of first order:In the first order reaction the concentration of the reactant A…

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Q: For a certain chemical reaction, the equilibrium constant K = 1.2 x 10 at 5.00 °C. Calculate the…

A: GivenEquilibrium constant K=1.2×1010Temperature T=5oC or 278KTo findStandard Gibb's free energy of…

Q: explain whether the combination of the two systems exhibits maximum or minimum boiling azeotrope

A: As given  (1)Psat = 68.38 kPa (2)Psat = 46.24 kPa