IB Chemistry Experiment 4 Composition of a Post-1983 Penny Lab Report Background: Through the use of percent composition one can easily find out how much of a certain element is in a compound or an item such as a post-1983 penny. The experiment will be using HCl a strong acid to dissolve all the zinc inside the outer copper shell. The reaction follows as such; Zn+2HCLZnCl2+H2‚ but there will be no reaction with copper. The portion that will be measured is the mass of copper left after all of
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Lab Report Diffusion is - One of two kinds of passive transport‚ - Diffusion can transport ions from higher concentration to lower concentration region without any other forces. - A net movement of molecules in and out of cell membrane - Diffusion can be affected by the steepness of the concentration gradient. Lab question: Is the rate of diffusion influenced by the presence of second molecule? Prediction: the rate of diffusion is influenced by the presence of second molecule
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Instructor Biology 1111 4-5 Lab Topic 4: Microscopy Elodea Cells at ___X Elodea Cells at ___X Report Sheet—Lab Topic 4 1. Draw and label each of the organisms available. Cheek Cells at ___X Cheek Cells at ___X Name _______________________________ Date_____________ Instructor ___________________________ Section___________ _________________________ 4-6 Lab Topic 4: Microscopy 2. Fill in the following table: Compound Microscope Dissecting Microscope Types of Light Available Powers
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Introduction The purpose of this lab was to identify unknown bacteria cultures using various differential tests‚ and my unknown bacteria is #17. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways‚ each was used in a way to help recognize those specifics and identify the unknown cultures. The differential
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is unlimited per the lab manual.(Bluedoor) If there is no competition in the water‚ the growth can be unlimited. The population will have favorable
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------------------------------------------------- Module title: EUC_4_005 Design and Practice ------------------------------------------------- Occurrence Number: [Overtype your occurrence Number here] ------------------------------------------------- Lab Group Number: [Overtype your lab group number here] ------------------------------------------------- Course: [Overtype name of course here] ------------------------------------------------- ------------------------------------------------- Student Name: [Overtype
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Human cilia or flagella are found in traditionally in three locations of the human body. In men‚ sperm is composed of a head and a tail‚ a tail that functions as flagella. In women‚ the fallopian tubes are lined with cilia projections‚ which help carry eggs and what creates resistance for sperm entering the vagina for fertilization. Both men and women (and all other mammals) have cilia in two other places in their bodies. One location is somewhat familiar: cilia coat the trachea and bronchial tubes leading
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Alka-Seltzer Rocket Formal Lab Report Abstract In the Alka-Seltzer Rocket lab one was to experimentally determine how much (grams) Alka-Seltzer and water in mL‚ is needed to launch the rocket the highest/longest distance in cm. Also to experimentally determine the % NaHCO3 in the tablet using the information from the highest/longest distance. Calculate the error and % error of NaHCO3 in an Alka-Seltzer tablet and to determine the limiting reagent for the highest/longest distance traveled. Alka-Seltzer
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For this lab‚ the expected outcomes are that when the heart rate and blood pressure are measured‚ both will increase when the heart has to pump against gravity‚ after exercise the heart rate will increase then return to normal‚ and as the subject inhales‚ it will be lower than when they exhale. Methods For this lab report‚ the laboratory manual (2009) was used for all labs. While completing lab five‚ electrodes were hooked up to the subject. After calibration for this lab‚
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Name: ______________________________________ Date: ________________________ Student Exploration: Osmosis Vocabulary: cell membrane‚ concentration‚ diffusion‚ dynamic equilibrium‚ osmosis‚ semipermeable membrane‚ solute‚ solvent Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Suppose you were trapped on a desert island with no sources of fresh water. Should you drink water from the ocean? Explain why or why not. _________________________________________________________________________
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