The Effect of the Concentration of Sulphuric Acid on the Reaction Rate with Magnesium Sarah Cain SCH 4UB Mr. Lankin April 1‚ 2009 Introduction The nature of the problem is to design an investigation that examines a variable affecting the reaction rate. In this experiment‚ magnesium will be reacted with different concentrations of sulphuric acid. The reaction is shown by the following chemical equation: H2SO4 (l) + Mg (s) → MgSO4 (aq) + H2
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large advertising budget and a strong distribution chain. I expect sales in the first year to reach 3.495 million units‚ or roughly $3.39 million. This would represent a 15% market share of the standard quality market. With a projected market growth rate of 30% each year and an annual advertising budget of $1.2 million‚ sales figures are expected to grow to 23.96 million units ($23.24 million) in year five. This figure will represent a 36% market share. 3. How much money will the firm make? What
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the receiver. Proper ‘Encoding’ is therefore very important to ensure effective communication. Once the ‘encoding’ is done‚ the message is ready for onward transmission. It is to be understood that when we speak the speech is a message‚ when we write the written matter is the message‚ when we paint the picture is the message‚ when we gesture the movements of our arms or expressions on our face is the message. Hence‚ in the process of communication‚ when an idea or thought is properly encoded‚ a
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and darkness contribute to the cycling of carbon through both cellular respiration and photosynthesis of a plant” we devised a hypothesis that states‚ If we place the two test tube‚ one with carbonated water and the other regular water‚ with the Elodea inside a dark environment it will perform cellular respiration as it will not receive enough light energy to perform photosynthesis. From the result of our experiment we found that the test tube with tap water and Elodea changed from its original color
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one through nine‚ which span over the course of a few days. Characters: 1. Ethan Frome: protagonist; extremely passive; in love with his wife’s cousin‚ Mattie; smart-used to study physics; often forced to give up things that are dear to him; enjoys nature; may get jealous; gives up aspirations for others; 24 years old in chapters one through nine but 52 in prologue and epilogue 2. Mattie Silver: Zeena’s cousin; has feelings for Ethan; around 20 years old; lively; happy; upset by small things-breaking
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Factors Affecting Photosynthesis Low light intensity lowers the rate of photosynthesis. As the intensity is increased the rate also increases. However‚ after reaching an intensity of 10‚000 lux (lux is the unit for measuring light intensity) there is no effect on the rate. Very high intensity may‚ in fact‚ slow down the rate as it bleaches the chlorophyll. Normal sunlight (usually with an intensity of about 100‚000 lux) is quite sufficient for a normal rate of photosynthesis. Open and Closed
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Make a wetmount (add 1 drop of water) of a piece of this tissue. Smooth out any "wrinkles." 4. STAIN with iodine stain‚ as demonstrated by the teacher. 5. Put on a cover slip; be sure to angle the cover slip to avoid air bubbles. 6. Locate cells on SCAN power and then bring up to LOW power and then HIGH power. 7. Observe‚ draw‚ and label. 1.
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Hui Tzu(Erin) Wang ID:0720052 Effect of an Increasing Substrate Concentration on Enzyme Activity Rate Abstract The reaction rate of an enzyme can be affected by many factors‚ and the purpose of this experiment was to find out how an increasing substrate concentration influences the rate of an enzyme activity; we obtained data from recording the absorbance of the samples which contain the same amount of potato juice (enzyme oxidase) and different
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------------------------------------------------- The Effects of Light Intensity and NaHCO3 concentrations on the Rate of Photosynthesis ------------------------------------------------- ------------------------------------------------- Definitions of terms: ------------------------------------------------- The experiment conducted in class was to determine
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Evaluation Like any experiment‚ there were a number of potential errors during the procedure of the experiment. Errors could have arisen as a result of the uncertainties associated with the instruments I used to take measurements‚ and also as a result of errors associated with the actual method. Of course‚ due to the limitations of the procedure‚ they could not be eliminated completely‚ so I will explain what I did to reduce them to an acceptable level and how I could have improved my method to
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