The half-life of 51Cr is 2.78×101 day. Calculate how much time it would take for an isolated quantity of 51Cr to decay by 18%.

Q: refraction and increase in R per CH2 group? thank you so much :)) Measurement of molecular…

A: Molecular refraction = (n2-1/n2+2)×molecular wt/density n=refractive index d=density

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Q: 130 120 110 100 90 80 70 60 50 • Stable 40 Radioactive 30 20 10 10 20 30 40 50 60 70 80 90 100…

A: The plot of stable and radioactive nuclei is given by,

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Q: Suppose a certain atom has two available states that are separated in energy by 1.97 eV. Given a…

A: Given Number of moles = 1.90 mol                                  = 1.90x6.023x1023 atoms…

Q: 7H2O + 2 Cr³+ + 3 Cl2 = Cr2O,²- + 6 Cl¯ + 14H+ e° = 0.03 V cell a. AG° = kJ K = Cu²+ (aq) + Ba(s) =…

A: Since you have posted question with multiple subparts as per the guidelines we can answer only three…

Q: CH3CH2 C=CHCH2CH3 CH3CH2 he IUPAC name is

A: Given : We have to write the name of the given compound.

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Q: Using the following data at 982 K: (1) A(s) + B(g) 2 C(g), Kel = 8 x105 (2) 2 C(g) + 4 D(g) 4 E(g),…

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Q: Question 10 Compared to a photon with1 = 100 nm, a photon with 1 = 600 nm has a frequency, a energy,…

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Q: Find the mole fraction of neon in a mixture with total pressure 3.9 atm, volume 8.7 L, temperature…

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Q: %Lysis СОMP 250 COMP 100 СOMP 20 n=1 87.77 81.73 65.8 n=2 81.71 50.45 63.7 n=3 86.64 55.38 59.4 n=4…

A: The solution of the question is given below:

Q: The half life for the radioactive decay of potassium-40 to argon-40 is 1.26 x 10 years. Suppose…

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Q: Question 15 What is the ground state electron configuration of the iron ion in FeSO4? O [Ar]4s23d6 O…

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Q: Frange the following compounds in order of increasing boiling point. Clear All CH3CH2CH2C-OH Lowest…

A: ->Carboxylic acid can form hydrogen bonds hene, there boiling point is maximum. ->Alkanes has…

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Q: * 0∞ Consider the following data on some weak acids and weak bases: K. formula formula name 4. -4 -5…

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A: Given,  An aqueous solution of 0.25M sodium formate is:

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A: GIVEN:- Consider a hypothetical diprotic acid (H2A) with pKa1 = 7.301 and pKa2 = 10.00. A40.0-mL…

Q: Do sample problem 13.6 in the Silberberg 8th edition. Hydrogen peroxide is a powerful oxidizing…

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Q: for each of the 2 centres, label them S or R

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Q: Calculate the pH of a solution prepared by adding 30.0 mLs of 0.20 M HCl to 50.0 mLs of 0.10 M…

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A: Here we are required to find the pH of buffer solution of weak base and it's salt of conjugate acid

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Q: Consider a molecule AB3, where both element A and B have 7 valence electrons. If the AEn for each…

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Q: Describe the preparation of a 250 mL of 5 M aqueous HCl solution from a 35% (v/v) concentrated…

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Q: OH O OH NO2 NOZ

A:

Q: 2.) Draw 1 isomer of the compounds in item no. 3, and state the type of isomerism. Example:…

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Q: Substance "C" is identified to have a specific heat capacity of 0.452 J/(g.°C). Which substances…

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Q: What is the common name of the following compound? H. H. H.

A: -> Here CH=CH2 attached with benzene ring.