Which part of a compound light microscope should a student?
1 answer:
I attached the usual lioght microscope that is used along with the light microscope that i usually draw when presenting my microscope labs. The typical labels are:
Head
Body (Neck)
Base
Eyepiece (Ocular Lens)
Revolving Nose
Objectives (Objective Lens)
Course Focus Knob
Fine Focus Knob
Mechanical Stage
Disk Diaphragm
Illuminator Bulb
Head
Body (Neck)
Base
Eyepiece (Ocular Lens)
Revolving Nose
Objectives (Objective Lens)
Course Focus Knob
Fine Focus Knob
Mechanical Stage
Disk Diaphragm
Illuminator Bulb
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Question:
<em>The diagram shows the potential energy changes for a reaction pathway.</em>
Part 1: Does the diagram illustrate an endothermic or an exothermic reaction? Give reasons in support of your answer.
Part 2: Describe how you can determine the total change in enthalpy and activation energy from the diagram and if each is positive or negative.
Answer:
Part 1: The diagram illustrates an endothermic reaction as the products has a higher potential energy than the reactants do. There is a positive slope of the diagram and there is enough energy to meet the activation energy requirement.
Part 2: You can determine the total change in enthalpy and activation energy from the diagram by the potential energy of the reactants. If the reactants have a high potential energy, then the enthalpy is also high, and if the reactants have a low potential energy, then the enthalpy is low. You can determine if the diagram is positive or negative by knowing if its an endothermic or exothermic reaction. An endothermic reaction is positive because the products are higher than the reactants and a exothermic reaction is negative because the reactants are higher than the products.
