BEER’S LAW EXPERIMENT 3 Amanda Buchanan – September 20‚ 2015 Chemistry 1212 – Section 50 OBJECTIVES: The objectives of this experiment are to understand why and how spectroscopy is used to determine the components and concentrations of a solution‚ describe various types of spectroscopy‚ describe the visible and ultraviolet regions of the electromagnetic spectrum‚ define Beer’s law and define the relationship between absorbance and transmittance. Other learning objectives are to create a Beer’s
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Introduction The resistance of a wire depends on certain factors. Some of these variables are listed below: Length of wire Diameter or thickness of wire Temperature at which wire is kept The material of which wire is made out of. The potential difference or voltage. Humidity Cross sectional area. Voltage across circuit All these factors will have to be kept constant except the diameter of the wire whilst doing the experiment to ensure that the investigation is
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disobedience has been occurring all throughout the history of this country. Peaceful resistance to laws is a positive way to impact a free society. It is called a peaceful resistance when it is non-violent and there is no blood shed. People such as Rosa Parks peacefully resisted against unfair laws. As it says in the article‚"Parks was arrested for her act of civil disobedience and convicted of violating the Jim Crow laws that enforced racial segregation in the South until 1965. Her arrest and subsequent
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Peaceful resistance to laws is essential in the progress of a free society and promotes responsibility among citizens to uphold their rights and beliefs. In many instances where desired civil‚ reproductive‚ or other rights are in question‚ the legal route of seeking change in our laws has been unproductive or seemingly impossible. This frustration is beyond an American dilemma or a 19th century issue‚ but rather spans many forms of government over time. It has been and will always be the duty of
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Chemistry 1061: Principles of Chemistry I Gas Laws Gas Laws: Pressure‚ Volume‚ and Temperature Introduction Pressure‚ volume‚ and temperature are properties of gases that reveal their relationships when any one of them is varied. Changing the temperature of a gas may change its volume or pressure‚ but how? What are the mathematical relationships between these properties? Are there limits to them? Scientists have discovered through the study of properties of gases that there is indeed a theoretical
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ELECTRICITY HOTS Questions for Practice 1. Name a substance whose resistance almost remains unchanged by increase of temperature. 2. Name two special characteristics of heater coil. 3. A wire of resistance 4 ohms is bent to form a circle. What is the resistance between two diametrically opposite ends? 4. How does the resistance of a conductor change if its temperature is increased? 5. A current of 4A flows in a wire of resistance 60 ohms. Calculate electrical energy consumed in 2 minutes. 6. V-I
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Peaceful resistance to laws is a positive impact a free society because for example like Rosa Parks she helped the colored people a lot. She fought for what she thought was the right thing to do because the colored people were being pushed around without having their ideas spoken out. She was taken out the bus she was riding in because she didn’t want to move from the seat she was sitting in and she was pushed out the bus and was told a lot of bad racist things that I don’t think any one deserve
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Newton’s Second Law How does a cart change its motion when you push and pull on it? You might think that the harder you push on a cart‚ the faster it goes. Is the cart’s velocity related to the force you apply? Or does the force just change the velocity? Also‚ what does the mass of the cart have to do with how the motion changes? We know that it takes a much harder push to get a heavy cart moving than a lighter one. A Force Sensor and an Accelerometer will let you measure the force on a cart
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Resistance in a Conductor: The electrical resistance of an electrical conductor is the opposition to the passage of an electric current through that conductor. Electrical resistance shares some conceptual parallels with the mechanical notion of friction. The SI unit of electrical resistance is the ohm (Ω).An object of uniform cross section has a resistance proportional to its resistivity and length and inversely proportional to its cross-sectional area. All materials show some resistance‚ except
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Batteries‚ Resistance and Current “Battery-Resistor”: Check “show battery” and “show cores”‚ watch what happens‚ adjust some variables 1. Why do electrons (blue dots) move? Draw a diagram of the battery‚ label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal of the battery. The blue dots indicating the electrons move because there is a voltage across the battery in which the electrons flow away from the positive terminal
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