INTRODUCTION In this lab‚ we will be measuring the viscosity of samples of polyvinyl alcohols in order to determine the molecular mass of their components. Polyvinyl alcohol is an example of a synthetic polymer‚ which is a macromolecule. The general chemical structure of such compounds are well-characterized‚ although variation in characteristics such as molar mass‚ chain length‚ and extent of branching are not obvious from merely looking at their molecular formula. There is also the complication
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Light Transmission Through Liquids With Different Viscosities Introduction Aim This experiment investigates the effects of different liquid viscosities on light transmission. The results of this experiment could greatly benefit marine biologists or other marine scientists. This would help them figure out how their flashlights would work in different water conditions in the ocean. Background Research Spectrophotometers are devices that measure the amount of light absorbed by a certain liquid
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A liquid with a high viscosity will not be able to flow well. For example‚ syrup or molasses both flow very slowly so they would have a high viscosity. Liquids such as water or alcohol would have a low viscosity because they flow very easily. Intermolecular forces that affect the molecules shape and composition will directly affect the viscosity of the molecule. An example of this can be observed between ethyl alcohol and ethyl glycol
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the oil has left. Oil’s function is to lubricate‚ clean‚ and cool the engine. Additives are added to the oil to enhance those functions.Viscosity: Technically‚ viscosity is defined as resistance to flow. Commonly though‚ we think of it as an oil’s thickness. To be more specific‚ it is the thickness of an oil at a given temperature.The viscosity of an oil could be reported at any temperature‚ but to standardize things‚ most laboratories report either a low temp (100F or 40C) or a high temp (210F or 100C)
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the amount of blood moving through a body area or the entire cardiovascular system in a given amount of time. 2. Pheriphial resistance- the opposition to blood flow resulting from the friction developed as blood streams through blood vessels. 3. Viscosity- A measure of the “thickness” of the blood and is caused by the presence of proteins and formed elements in the plasma 4. Systole 5. Diastole 6. End diastolic volume 7. Stroke volume 8. Cardiac Output Activity 1 1. What happened to the
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Definition 1 1. CT Computerized Tomography‚ imaging modality 2. PPE Personal Protective Equipment. Gloves‚ gown‚ mask 3. Contrast media Diagnostic agents 4. Artifact Unwanted objects‚ error in an image 5. Viscosity Thickness‚ friction of fluid Definition 2 1. CT CT is an acronym for computerized tomography. It is a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional images. 2. PPE Personal Protective Equipment
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PROTEINS Abstract The experiment aimed to use the concept of viscosity to study the effects of different denaturants on 1% albumin extract. An Ostwald viscometer was used to measure the flow time of 5 mL of the blank and native protein. These were then denatured by adding 1 mL of denaturant and had their flow time measured. The flow time from the blank to denatured protein is increasing. The specific viscosity and reduced viscosity‚ ηred‚ were calculated from the data obtained. The best denaturant
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INTRODUCTION Shaving gel is a viscous‚ clear gel preparation which is applied before shaving in order to soften the beard‚ lubricate the passage of razor over the face and moisturize the skin. Gels have cross-linked system which exhibits no flow in steady state. Desired characteristics of a Shaving Gel: * It should be clear and transparent. * It should have thick consistency but flowable. * It should lather easily when applied with brush. * It should give clean‚ fresh and moisturized
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which is a fluid that doesn’t have consistent viscosity. This depends on temperature for viscosity like other fluids such as honey. As the temperature of the honey increases‚ its viscosity decreases. Also‚ for the custard cream‚ the viscosity increases as less force is applied to it‚ which means that it is force-dependent. If the egg or starch is missing‚ then the viscosity will decrease. In order for the custard cream to have a consistent viscosity‚ the temperature of cooking the cream should be
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Physio Cardio Lab Report Answers Activity 1 Questions: 1. Explain how the body establishes a pressure gradient for fluid flow. Pressure gradient is the flow rate of a liquid through a pipe. This is directly proportional to the difference between the pressures at the two ends of the pipe and inversely proportional to the pip’s resistance. The pressure gradient is directly dependent upon blood vessel radius which essentially controls blood flow. The bigger the blood vessel radius‚ the more
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