HS130 MIDTERM REVIEW UNITS 1-4 Chapter 11 Blood Chapter 12 The Circulatory System Chapter 12 The Lymphatic System and Immunity Chapter 14 The Respiratory System Daudi K. Langat‚ PhD January 2011 Chapter 11 Blood BLOOD COMPOSITION Blood plasma • Definition—blood minus its cells • Composition—water containing many dissolved substances (e.g.‚ foods‚ salts‚ and hormones) • Amount of blood—varies with size and sex; 4 to 6 L about average;
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water into beaker and record 5. Add 5 more drops and record 6. Add 5 more drops and record 7. Repeat 1-5 two more times Part 2: Rate Order of KI 1. Get pipets and label them accordingly 2. Fill pipets with 2ml of each liquid 3. Put pipets on a stand 4. Get a well and clean it 5. Use table 1 as a guide and fill wells first well accordingly 6. Do the next 3 wells and repeat step 5 7. Fill wells 7‚8‚ and 9 8. Fill wells 10‚ 11‚ and 12 9. Add
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Which fluids have the highest density? The lowest? What does this tell us about which fluids will be on the top or bottom in the same container? Density is the comparison of the volume of an object to the matter. The fluid with the highest density is honey‚ while alcohol stands in the place of the lowest. The density of the fluids determines where each layer should be arranged in the glass container. Honey had a high density of 1.52g/mL‚ and with the high density comes high viscosity‚ which is why
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eutectic point of biphenyl. Unknown substances were then tested using the mixture melting point method in order to determine their identities. INTRODUCTION The melting point of a solid is the temperature where the substance changes from a solid to a liquid state. Using known substances and determining their melting points is a way to establish the purity of and to identify a sample. This lab demonstrates the temperature range where certain compositions of solid naphthalene and biphenyl begin to melt
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The unknown carboxylic acid’s melting point was 108°C according to the Mel-Temp machine. The melting point is the temperature at which a solid precipitate changes into its liquid form upon heating. The melting point of benzoic acid‚ the aromatic carboxylic acid was 122°C. Thus‚ the product contained impurities which caused the solid to melt at a lower temperature than the actual temperature. Pure solids typically melt at higher temperatures while impure solids melt at lower temperatures. This is
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Does Adding Salt to Water Make it Boil at a Higher Temperature? Project Design Plan Everyone knows that water boils at 212°F‚ but does adding salt to a pot of water make it boil at a higher temperature? Being a person that cooks frequently at home‚ I wanted to test the debated idea that adding salt to my water will make it boil faster. One of my friends says it does raise the temperature and therefore cooks it faster. My other friend says it only helps it taste better. Literature
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Density of Solutions Lab Purpose: The purpose of this lab was to find out the densities of the known and unknown Solutions that were given to us. This can be found by dividing the mass by the volume of the Solutions. The other purpose of this lab was to perfect our skills in finding out the percentage error‚ uncertainties‚ random error‚ and systematic error. Variables: Independent: Mass Percentage of Solution (KCl); Unknown Solution; Temperature Dependent: Density Materials: 10.00 mL
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Project Paper Name Institution Introduction swimmers are frequently advised to leave the water after strikes of lightening. What is the scientific basis for this? What property of water makes swimmers corned when electricity is around? What other liquids possess the same property? Does distilled water behave the same? Consider the following; a. What takes place when a solute dissolves in a solvent? How would this be determined? b. What process in the molecular level takes place to explain what is
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What Interaction Of Outside Influence Makes Ice Melt Fastest? A. Explain the significance of the given factors in your project design plan: • Problem statement • Relevance of your testable question Problem Statement: I have lived in a place that during the winter‚ ice would form on the streets and sidewalks and have wondered why things such as salt or sand are used over other methods to help de-ice the surfaces? Why is salt or sand the most commonly used substances when addressing this issue
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Unit 12 – Applications of Mechanical Systems in Engineering Know about the purpose and uses of lubricants and lubrication systems P1) Oil - Vegetable Oil Vegetable oils are a triglyceride that is extracted from agricultural crops‚ these oils are natural products and therefore their chemical composition changes from one crop to another. They are used in engines and chainsaws as a lubricant instead of petroleum based oils. Canola Oil – made from rapeseed – is an example of a vegetable
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