are light-independent. The rate of the first series‚ called the light reaction‚ can be increased by increasing light intensity (within certain limits) but not by increasing temperature. In the second series‚ called the dark reaction‚ the rate can be increased by increasing temperature (within certain limits) but not by increasing light intensity Photosynthesis involves the production of oxygen‚ and the uptake of carbon dioxide. These can be used as a measure of the rate of photosynthesis. This experiment
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Investigating the rate of reaction between Marble Chips (Calcium Carbonate) and hydrochloric acid Aim. In the investigation I am going to find out how the surface area affects the rate of reaction by measuring the amount of gas produced and weight loss in a reaction between small/large pieces of Marble Chips (Calcium Carbonate) and Hydrochloric acid per minute. Hypothesis. The rate of reaction increases when the surface area of a solid reactant is increased. This happens because by
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Objectives 1. To recognize the macroscopic properties of five chemical systems at equilibrium 2. To observe shifts in equilibrium concentrations as stresses are applied to the systems. 3. To observe a shift in equilibrium concentrations associated with changes in temperature. 4. To explain the observations obtained by applying Le Chatelier’s principle. Materials Refer to page 209 of Heath Chemistry Laboratory Experiments. Procedure Refer to pages 209 – 211 of Heath Chemistry
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The investigation stage requires thorough examination in order to learn the exact natures of our challenges. Effective and comfortable solutions happen when we develop a stable plan and implement it. This requires brainstorming‚ visiting various sources‚ and performing individual research. Results need to be evaluated and compared in order to determine whether the plan is realistic and most suitable as a method. The sources will vary depending on each situation but are not limited when solving problems
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Investigating the Limits of Cell Growth Background: To find factors that limit cell growth In multicellular organisms‚ In order for an organism to grow cells must divide through mitosis. Cell division happens after the cell is big enough so the daughter cells will be replicated without any flaws. The regulation and amount of materials that can enter and leave the cell is based on how large the cells surface area is. The rate of movement is also determined by the volume of the cell. Many factors like
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Natalie Drossoyianni I.B 1 Psychology HL Discuss the use of technology in investigating cognitive processes. Technology has been very useful for the past few years in investigating cognitive process. With the use of neuro-imaging techniques‚ researchers can examine brain structure and function‚ and thus understand better the relationship between cognition and physiology. The basic neuro-imaging techniques are the PET‚ the MRI‚ and THE fMRI scan. The PET or else the positron emission tomography
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On Thursday‚ September‚ 28 in Ms. O’Brien’s Honors Science class we conducted two experiments the Mixed Substances Lab and the Investigating Mixtures Lab. The objective of the Investigating Mixtures Lab was “To observe that not all liquids behave the same way when mixed with other liquids”. Before we started the lab we we each created a hypothesis mine was “If the water and vegetable oil are mixed and the two combine and make a mixture‚ then the vegetable oil will float and the water will sink”.
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calculate the fraction that will be used up after 6.0 minutes. 4. [15 points] The rate law for the decomposition of ozone to molecular oxygen 3 O3 (g) −→ 3 O2 (g) is rate = k [O3 ]2 . [O2 ] The mechanism for this process is k1 O3 O + O2 k−1 k 2 O + O3 −→ 2 O2 Derive a rate law from these elementary steps. Clearly state the assumptions you use in the derivation. Explain why the rate decreases with increasing O2 concentration. 5. [15 points] Consider the following
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Running head: LAB 5: INVESTIGATING AN ENZYME-CATALYZED REACTION Lab 5: Investigating an Enzyme-Catalyzed Reaction September 24‚ 2014 Principles of Biology 120.601 Mrs. Annemarie Duncan Abstract: (Burmania) This experiment was performed in order to examine ways in which a potato catalase enzyme reacts to various assays with differing variables. To do so a baseline assay (undiluted extract and room temperature H2O2) was used within the experiment with only one other variable changed in
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Investigating the rate of electrolysis. An investigation to find out what factors affect the rate of electrolysis of a solution containing copper (II) ions. Plan It is known that by passing a constant electric current through a copper sulphate solution the passage of ions through this solution results in copper atoms being dissolved into the solution from the anode‚ which has a positive charge while positive copper‚ ions (cations) are also being discharged at the cathode which has a negative charge
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