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Lab Reports Essay Examples

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Determining the Stoichiometry of Chemical Reactions

Mole ratios are used as conversion factors between products and reactants in many chemistry problems. The optimum ratio, which is the psychometric ratio in the equation, arm the greatest amount of product, and, if the reaction is exothermic, generate the most heat and maximum temperature change, Double replacement reactions are generally considered to be irreversible….

Projectile Motion Lab Report

The two pictures below demonstrate the calculations from Trial 1 at 00 and Trial 1 at 450. In this experiment we did five separate shots from the cannon at 00, and 3 separate shots at 450. We determined the average distance of the shots from each angle by using a meter stick. We were then…

Tlc Lab Report

Food color additives are dyes, pigments or substances that impart color when applied to a food, drug, cosmetic, or the human body. The Food and Drug Administration (FDA) is responsible for regulating all color additives used in the United States. All color additives permitted for use in foods are classified as “exempt from certification” or…

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Asexual Propagation Lab Report

In this process, adventitious roots are seen in the growing cycle. Adventitious roots are those that grow form parts of the plant that they normally would not grow from. The cuttings must do this in order to form a completely new plant. There are multiple methods of asexual propagation; some include cuttings, layering, division, and…

Osmosis Lab Report

The result was that the more sucrose in the bag, the greater the final mass. Introduction: The reasons for doing this lab are so that we can learn about osmosis with a model similar to a cell and so that we can have a better understanding of the process and nature of osmosis. Osmosis is…

Biology Osmosis Lab Report

The results illustrated that increased incineration gradient increases the rate of diffusion of water in the tubes. We concluded that as concentration of the solution increases, the diffusion rate of water out of the tubes increases proportionally. Introduction The cell membrane serves many purposes, such as regulating the transport of material into and out of…

Lab Report Zea Mays

Lethal alleles are those that fail to successfully code for the proper production of a functional protein that is vital for life. Recessive lethal alleles are mutations that are only lethal to homozygous individuals with two copies of the mutated allele (Castle, 1910) . In humans cystic fibrosis and sickle cell anemia are two examples…

Lab Report Compound Pendulum in Different Medium

Pendulum in different medium Rural Corselets Oasis Introduction An oscillating object is a mass that follows a pattern that causes the mass to return to its initial position after completing one complete oscillation in a constant certain amount of time. This experiment aims to show how the medium that a simple pendulum is traveling though…

Pill Bug Lab Report

In this experiment we tested the pill bug Armadillos vulgar to see if it had he ability to make two consecutive right turns. We expected the pill bugs to go on either path; one path with all left turns and the other with all right turns, to prove the turn alternation theory wrong. I expected…

Chemistry of Urine Lab Report

What is your interpretation of the above test? B. Urea Effect on Litmus C. Uric acid Crystals Is uric acid normally found in urine? Why? D. Electrolytes Indicates the presence of electrolytes as follows: Not Present Present (+) Strongly Present (++) D-2 SASS IPPP- An+ D-5 Ca+ What is your interpretation of the above tests?…

Test Tube Mystery Lab Report

Solubility can be determined through reacting two chemicals together and see if a precipitate is created. Previous knowledge of the solubility rules will help disclose whether two chemicals will or will not create a precipitate. When two chemicals do create a precipitate, it will be easy to determine which chemicals they are. In the end,…

Endocrine Lab Report

Smooth muscles are typically under control of the autonomic nervous system, and do not contract voluntarily. Smooth muscle contracts slowly, and does not exhibit the characteristic ‘twitch” seen in skeletal muscle. In addition, smooth muscle is not prone to muscle fatigue, making it an ideal component of sphincter muscles. Smooth muscle is found in the…

Carboxylic Lab Report

When H in the carbonyl group is replaced with an alkyl group, it becomes an ester group. ‘The reaction typically gives 60-70% of the maximum yield” (Status, 80). The reaction of an ester could also be reversible to make carboxylic acid and alcohol; this process is called hydrolysis. But when, ‘the base-promoted decomposition of esters…

Lab Report

The higher the rate of mobility, he closer the serum proteins move to the anode. In the experiment of cellulose acetate zonal electrophoresis, barbital buffer and pheromones blue were used in the steps of sample loading and staining of membrane. The result showed that serum albumin has the highest concentration, followed by y Globulin, 13…

Plant Transpiration Lab Report

Guard cells control the opening and closing of the stomata as well as the size of the opening; they open in order to obtain 02 and CO in the process they allow the escape of H2O. This experiment was conducted to learn more about this process, and how certain common environmental factors affect it. Plant…

Osmosis Lab Report

The resulting weights were recorded and the data was graphed. We then could draw conclusions on the lab. Introduction Diffusion and Osmosis are two concepts that go hand in hand with each other. Diffusion is simply described as the movement of a substance from a region of high concentration to a region of low concentration….

Lab Report Human Traits

There are two types of genes, the dominant and the recessive genes. The dominants, often represented by a capital letter, are that when present, the living thing will have the characteristic. Recessive genes, represented by a lower case letter can be together with a dominant gene or another recessive gene. For example: suppose that in…

Thin Layer Chromatography Lab Report

Chromatography works on the principle that different impounds will have different solubility and adsorption to the two different phases between which are to be partitioned. Thin Layer Chromatography (TTL) is a solid-liquid technique. The mixture is observed when it is in two different phase; a solid (stationary phase) and a liquid (moving phase). Thin Layer…

Lab Report

Incomplete combustion is the reaction of an element or compound tit oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react completely, not all fuel is used. This may result in the formation of solid carbon a black residue. Procedure The…

Lab Report Osmosis

We studied the rate of osmosis in artificial cells by creating five different dialysis bags with different concentrations of OTOH SUcrose and water and calculating the cumulative change in weight ever 10 minutes for 90 minutes. Our results for the artificial cells showed different concentrations moved from high to low concentrations- through hypotonic movement or…

Biology Lab Report Ib Hl Osmosis

The pieces that will be placed in the solution with the lowest concentration of salt will have small weight loss. Finally, the pieces that will be placed in water (Nasal concentration O) will gain weight. This is expected because of the phenomenon of osmosis which was examined in a previous lab. Variables: Independent: concentration (%)…

Demography Lab Report

Patterns of survival vary depending upon the environment. Age is also an important component for many populations because fecundity and survivorship frequently vary with age. Humans are one species whose fecundity and survivorship are affected by age and the environment. One way that biologists attempt to distinguish patterns in survivorship rates is to use a…

Chemistrt Lab Report

The determination of water hardness is a useful est.. That provides a measure of the quality of water for household and industrial uses. Hard water has no obvious health effects, but these ions form insoluble compounds with soap. Results are unsightly “scum” on clothing and so-called “bath-tub ring”. Water hardness is important to industry because…

Lab Report

The rotor speed is denoted as Nor and the phenomenon that the rotor is continuously falling behind the stator rotating miff is called slip. The mathematical expression is shown as below [pica] (Equation 3) 3. APPARATUS Three-phase induction motor 1 unit DC generator Power Converter Power Analyzer Tachometer Three-phase variable resistive load bank Three-phase load…

Phenolphthalein Lab Report

The breasted-Lowry theory defines an acid as a hydrogen-ion donor, which basically means the element would donate an ion. Unlike a bas is a hydrogen-ion acceptor which takes on an ion. I learned ammonium is very soluble in water and accepts a hydrogen ion, so it would be a breasted-Lowry base whereas water is a…

Enzyme Lab Report

In this experiment, the environment of the enzyme was altered, by increasing or decreasing the temperature, pH and concentration. The purpose was to observe if and how the enzyme would react to such changes. This experiment tested whether heating or cooling a catalane would increase or decrease the rate of reaction. The temperature was increased…

Vitamin C Lab Report

Chemicals and materials used: Different kinds of juices : Sappy – Orange , Sappy – Mango, Enjoin – Mango , Topazes – Lemonade, Rain – Orange, Topazes – grapefruit * Fresh orange, grapefruit , tangerine * Iodine solution 13-1 (Brownish red color) * Indicator : starch * Graduated cylinder * Flask * beaker * Dropper…

Pharmacology Lab Report

The functional studies provided information regarding the presence of musician cholesterol that mediate contraction only. Thus radioing binding techniques were also employed to determine which musician cholesterol subtypes were present and their relative densities. In vitro functional studies: Experimental protocol l: The intent of this experiment was to determine the relative potteries of selected incurring…

Lab Report

This energy can be displayed in the form of visible light. The main purpose/objective of this lab was o observe the characteristic colors produced by certain metallic ions when they are vaporized in a flame. Another main objective of this lab was identifying the unknown metallic ions by means of flame tests. Materials: Please refer…

Post Lab Report

This process aids in determining affinity. 3 The most polar compound is always the absorbent; however, the polarity of the compounds in the mixture in addition to the solvents found in the mixture differs in polarities. We use chromatography, or more specifically TTL, to determine the relative amounts of components in a mixture. Additionally TTL…

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