Ch.19 - Nuclear ChemistryWorksheetSee all chapters
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Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Calculate the quantity of energy produced per gram of U-235 (atomic mass = 235.043922 amu) for the neutron-induced fission of U-235 to form Xe-144 (atomic mass = 143.9385 amu) and Sr-90 (atomic mass =89.907738 amu).

Solution: Calculate the quantity of energy produced per gram of U-235 (atomic mass = 235.043922 amu) for the neutron-induced fission of U-235 to form Xe-144 (atomic mass = 143.9385 amu) and Sr-90 (atomic mass =

Problem

Calculate the quantity of energy produced per gram of U-235 (atomic mass = 235.043922 amu) for the neutron-induced fission of U-235 to form Xe-144 (atomic mass = 143.9385 amu) and Sr-90 (atomic mass =89.907738 amu).

Solution

We’re asked to calculate the quantity of energy produced per gram of U-235  for the neutron-induced fission of U-235 to form Xe-144  and Sr-90.


Recall that Nuclear Fission is the splitting of a heavy nucleus to form two or lighter ones.


Neutron-induced fission is when you shoot a neutron particle at the nucleus and that’s what splits the nucleus into smaller ones. Therefore, a neutron is one of the reactants.


To calculate the energy produced for the reaction per gram of U-235, we’re going to use the following steps:


Step 1: Write a balanced nuclear reaction
Step 2Calculate the mass defect (Δm).

Step 3: Calculate the mass defect (Δm) in kg.
Step 4: Calculate the energy produced (E).


Step 1: Write a balanced nuclear reaction


Reactants: U-235 and neutron

Products: Xe-144  and Sr-90

*The numbers denote the mass number of each element  

Reaction:

U92235+n01Xe54144+Sr3890

*The numbers written below the mass numbers are the atomic numbers of each element and can be found on the periodic table.

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