Pj Problems - Overview
The Number Line
7 Spaces Of Interest - Overview
Triadic Unit Mesh
States Of Matter
COHN - Natures Engineering Of The Human Body
The Human-Body Systems
Faith, Love, Charity
There is an energy hill all chemical reactions must climb inorder for the reactants in the chemical reaction to produce the desired products. The activation energy is the energy required to climb to the peak of this hill. The peak is the activated complex. It is a short-lived high-energy (excitations due to absorption of activation energy) zone where energetic collisions cause changes in the electron cloud of the colliding molecules and allow bonding rearrangement. Consequently, the reaction is able to slide down the hill as the products are being formed.
(a) Figures 11.1(a) and 11.1(b) are energy diagrams. Which diagram represents an endothermic reaction and which diagram represents an exothermic reaction?
(b) Compare the activation energy required for exothermic reaction with that required for endothermic reaction.
Mechanical processes also need activation energy. Consider figure 11.1(c). A is a rectangular prism in a vertical position. Its weight is W and its center of gravity is C1 when in a vertical position. Suppose the prism is pushed slightly such that it tilts and its center of gravity changes to C2 and thereafter, falls on its own to a horizontal position where its center of gravity is C3. The vertical distance between C1 and C2 is y1. The vertical distance between C1 and C3 is y2.
(c) What is the activation energy required by the prism inorder to fall to its horizontal position?
S7P3A32 (Force - Push)
Pj Problem of Interest is of type force. Energy is the capacity for work. It is force that is the doer of the work. So energy and work problems are of type force. The collisions occuring at the activated complex are force-pushes. Also the push that tilts the rectangular prism in fig 11.1(c) is a force-push.
(a) The energy diagram in figure 11.1(a) represents an exothermic reaction (energy is released). The energy diagram in figure 11.1(b) represents an endothermic reaction (energy is absorbed).
(b) Generally, an exothermic reaction will require less activation energy than an endothermic reaction. However, there are some chemical reactions expected to be exothermic that require very high activated energy.
(c) Activation energy that must be supplied to the rectangular prism to activate the fall:
The net energy change = -Wy2 (energy is released).
The negative net energy change (energy released) is due to the difference in the gravitational potential energy (G.P.E) of the prism in its vertical position relative to its horizontal position. The prism falls from a metastable position at a higher G.P.E to a stable position at a lower G.P.E.
The point . is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.
Derivation Of The Area Of A Circle, A Sector Of A Circle And A Circular Ring
Derivation Of The Area Of A Trapezoid, A Rectangle And A Triangle
Derivation Of The Area Of An Ellipse
Derivation Of Volume Of A Cylinder
Derivation Of Volume Of A Sphere
Derivation Of Volume Of A Cone
Derivation Of Volume Of A Torus
Derivation Of Volume Of A Paraboloid
Volume Obtained By Revolving The Curve y = x2 About The X Axis
Single Variable Functions
Absolute Value Functions
Equation Of The Ascent Path Of An Airplane
Calculating Capacity Of A Video Adapter Board Memory
Probability Density Functions
Boolean Algebra - Logic Functions
Ordinary Differential Equations (ODEs)
Infinite Sequences And Series
Introduction To Group Theory
Advanced Calculus - Partial Derivatives
Advanced Calculus - General Charateristics Of Partial Differential Equations
Advanced Calculus - Jacobians
Advanced Calculus - Solving PDEs By The Method Of Separation Of Variables
Advanced Calculus - Fourier Series
Advanced Calculus - Multiple Integrals
Production Schedule That Maximizes Profit Given Constraint Equation
Separation Of Variables As Solution Method For Homogeneous Heat Flow Equation
Newton And Fourier Cooling Laws Applied To Heat Flow Boundary Conditions
Derivation Of Heat Equation For A One-Dimensional Heat Flow
The Universe is composed of matter and radiant energy. Matter is any kind of mass-energy that moves with velocities less than the velocity of light. Radiant energy is any kind of mass-energy that moves with the velocity of light.
Composition And Structure Of Matter
How Matter Gets Composed
How Matter Gets Composed (2)
Molecular Structure Of Matter
Molecular Shapes: Bond Length, Bond Angle
Molecular Shapes: Valence Shell Electron Pair Repulsion
Molecular Shapes: Orbital Hybridization
Molecular Shapes: Sigma Bonds Pi Bonds
Molecular Shapes: Non ABn Molecules
Molecular Orbital Theory
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