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Concept explainers
(a)
Interpretation: The expected equation of decay.
Concept Introduction: With the help of Band of Stability graph, we can calculate the value of N/Z ratio and hence determine the type of emission:-
1. Isotopes that lie below or towards the right of the band of stability have excess of neutrons so they emit beta particles to attain stability.
2. Isotopes that lie above or to the left of the band of stability have more protons so they emit positron or electron capture occurs so the extra neutron increases stability.
3. Heavy nuclei emit alpha particles to attain stability.
(b)
Interpretation: The expected equation of decay
Concept Introduction: With the help of Band of Stability graph, we can calculate the value of N/Z ratio and hence determine the type of emission:-
1. Isotopes that lie below or towards the right of the band of stability have excess of neutrons so they emit beta particles to attain stability.
2. Isotopes that lie above or to the left of the band of stability have more protons so they emit positron or electron capture occurs so the extra neutron increases stability.
3. Heavy nuclei emit alpha particles to attain stability.
(c)
Interpretation: The expected equation of decay.
Concept Introduction: Concept Introduction: With the help of Band of Stability graph, we can calculate the value of N/Z ratio and hence determine the type of emission:-
1. Isotopes that lie below or towards the right of the band of stability have excess of neutrons so they emit beta particles to attain stability.
2. Isotopes that lie above or to the left of the band of stability have more protons so they emit positron or electron capture occurs so the extra neutron increases stability.
3. Heavy nuclei emit alpha particles to attain stability.
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Chapter 14 Solutions
Chemistry for Engineering Students
- 9. OA. Rank the expected boiling points of the compounds shown below from highest to lowest. Place your answer appropriately in the box. Only the answer in the box will be graded. (3) points) OH OH بر بد بدید 2 3arrow_forwardThere is an instrument in Johnson 334 that measures total-reflectance x-ray fluorescence (TXRF) to do elemental analysis (i.e., determine what elements are present in a sample). A researcher is preparing a to measure calcium content in a series of well water samples by TXRF with an internal standard of vanadium (atomic symbol: V). She has prepared a series of standard solutions to ensure a linear instrument response over the expected Ca concentration range of 40-80 ppm. The concentrations of Ca and V (ppm) and the instrument response (peak area, arbitrary units) are shown below. Also included is a sample spectrum. Equation 1 describes the response factor, K, relating the analyte signal (SA) and the standard signal (SIS) to their respective concentrations (CA and CIS). Ca, ppm V, ppm SCa, arb. units SV, arb. units 20.0 10.0 14375.11 14261.02 40.0 10.0 36182.15 17997.10 60.0 10.0 39275.74 12988.01 80.0 10.0 57530.75 14268.54 100.0…arrow_forwardA mixture of 0.568 M H₂O, 0.438 M Cl₂O, and 0.710 M HClO are enclosed in a vessel at 25 °C. H₂O(g) + C₁₂O(g) = 2 HOCl(g) K = 0.0900 at 25°C с Calculate the equilibrium concentrations of each gas at 25 °C. [H₂O]= [C₁₂O]= [HOCI]= M Σ Marrow_forward
- What units (if any) does the response factor (K) have? Does the response factor (K) depend upon how the concentration is expressed (e.g. molarity, ppm, ppb, etc.)?arrow_forwardProvide the structure, circle or draw, of the monomeric unit found in the biological polymeric materials given below. HO OH amylose OH OH 행 3 HO cellulose OH OH OH Ho HOarrow_forwardWhat units (if any) does K have? Does K depend upon how the concentration is expressed (e.g. molarity, ppm, ppb, etc.)? in calculating the response factorarrow_forward
- Don't used hand raiting and don't used Ai solutionarrow_forwardDon't used Ai solution and don't used hand raitingarrow_forwardOA. For the structure shown, rank the bond lengths (labeled a, b and c) from shortest to longest. Place your answer in the box. Only the answer in the box will be graded. (2 points) H -CH3 THe b Нarrow_forward
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