Number of half-lives that are elapsed has to be calculated from the given diagram where platinum-192 decays to osmium-188. Concept Introduction: Radioactive nuclides undergo disintegration by emission of radiation. All the radioactive nuclide do not undergo the decay at a same rate. Some decay rapidly and others decay very slowly. The nuclear stability can be quantitatively expressed by using the half-life. The time required for half quantity of the radioactive substance to undergo decay is known as half-life. It is represented as t 1 / 2 . The equation that relates amount of decayed radioactive material, amount of undecayed radioactive material and the time elapsed can be given as, ( Amount of radionuclide undecayed after n half lives ) = ( Original amount of radionuclide ) x ( 1 2 n )

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eks.com/aleksogi/x/sl.exe/1o_u-IgNslkr7j8P3jH-IQs_pBanHhvTCeeBZbufuBYTI0Hz7m7D3ZS17Hd6m-HIl6n52njJN-TXdQA2X9yID-1SWQJTgnjARg30 111 States of Matter Understanding conceptual components of the enthalpy of solution 0/5 Ge A small amount of acetonitrile (CH, CN) is dissolved in a large amount of water. Imagine separating this process into the four stages sketched below. (These sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.) CH,CN H₂O B 88 C Use these sketches to answer the questions in the table below. The enthalpy of solution AH is negative soln when CH3CN dissolves in water. Use this information to list the stages in order of increasing enthalpy. Would heat be absorbed or released if the system moved from Stage C to D? What force would oppose or favor the system moving from Stage C to D? Check all that apply. 1 absorbed O released neither absorbed nor released. none O ionic bonding force covalent bonding force…

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Chapter 11, Problem 11.36EP

Interpretation Introduction

Interpretation:

Number of half-lives that are elapsed has to be calculated from the given diagram where platinum-192 decays to osmium-188.

Concept Introduction:

Radioactive nuclides undergo disintegration by emission of radiation. All the radioactive nuclide do not undergo the decay at a same rate. Some decay rapidly and others decay very slowly. The nuclear stability can be quantitatively expressed by using the half-life.

The time required for half quantity of the radioactive substance to undergo decay is known as half-life. It is represented as t1/2.

The equation that relates amount of decayed radioactive material, amount of undecayed radioactive material and the time elapsed can be given as,

(Amount of radionuclideundecayed after n half lives) = (Original amount of radionuclide) x (12n)

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