Uses of Grapheno in Electronics
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What are the main uses of grapheno in Electronics?
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The Challenge for this weeks worksheet is to use the numbers obtained by a student to complete the “Identification of unknown Metal Carbonate” pages in the lab manual (pg 65-66) then submit a pdf copy to the Gradescope page. Deadline Friday Oct 9 at 5 pm. A video of the experimental basics is athttps://www.youtube.com/watch?v=V6jP1Jt59Xc To prepare for the experiment you need to read the lab manual pg 59-63, paying specific attention to how the mass percent of CO2 is determined for a compound. You will need to calculate Mass percent of CO2 for each of the Carbonates listed in table 9-3. Remember that if you have a “hydrate” as shown on page 60, you must use the entire Molar mass including the number of water molecules to find the correct theoretical percent CO2. The goal is to use the numbers generated by a student to find your unknown. The scene: A student weighed a beaker and test tube, mass was determined as 129.02 g. Some Lithium Carbonate was added and now the mass was 130.22 g. Acid was added to the test tube and the total mass before reaction was 139.73 g. The acid was dumped into the beaker (see video for observations) and now the entire assembly weighed 139.01 g.It is up to you to use these numbers to make sure you know how to do the calculations and get the correct mass percent for Lithium Carbonate. Next the student took an unknown carbonate and performed the same steps, repeating for accuracy. Items weighed Trial 1 Trial 2 Beaker + test tube 136.14 g 134.75 g Beaker + test tube +carbonate 137.25g 136.04 g Beaker + test tube +carbonate + acid 146.87 g 148.22 g Mass of assembly after reaction 146.69 g 147.99 g The calculations and questions to answer: Use this information to fill in the tables on pg 65, in table 9-1 you should be able to obtain the correct mass percent for Lithium Carbonate. This allows you to make sure you understand the process.Fill in the data table 9-2 for your unknown carbonate. Find the Mass % of CO2 in the unknown carbonate, compare to table 9-3 ( that you filled out in the preparation for this lab) and name which unknown you have.Find the % error in your results (question 1) remembering that the error is an absolute value.Watch the video again to think about sources of error. List 3, and decide which could have the greatest impact on your results.Apply what you learned when calculating % CO2 in a carbonate, and calculate % Cl in Group II metal chlorides. It is the same procedure, but now you are considering chlorine instead of CO2. If you do not remember what Group II is, use your textbook to refresh your memory. Remember to show calculations for all sections.
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SCIE 208 American InterContinental University Plant Chemical Adaptations Research Paper
Plant Chemical Adaptations Physical adaptations are one way plants have become well-adapted to specific environmental cond ...
SCIE 208 American InterContinental University Plant Chemical Adaptations Research Paper
Plant Chemical Adaptations Physical adaptations are one way plants have become well-adapted to specific environmental conditions. For example, cacti have spines in place of leaves to prevent water loss in the arid conditions of the desert, and deciduous trees lose their leaves in the fall to survive cold weather conditions over the winter. Chemical adaptations are another means for plant protection. Many plants produce toxic or noxious compounds to protect themselves from insects or animals that would eat them, to reduce competition from other plants, or even to change the response of pollinators. Humans analyze and harvest these compounds for our own benefit.Read this article on the search for useful plant compounds: Mother Nature’s Medicine CabinetRead this article on the less-than-beneficial uses of plant products: Addictive Drugs That Are Actually PesticidesChoose ONE of the following compounds:CaffeineCocaineNicotineArtemisininAnswer these four questions:Describe the compound and in what plant(s) it is found. Explain how this compound provides protection for the plant.Does the compound provide any other benefits for the plant, such as enhanced pollination?What effect does the compound have on humans?Follow these guidelines for your paper: Utilize at least 1 credible source to support the arguments presented in the paper. Make sure you cite appropriately within your paper, and list the reference(s) in APA format on your Reference page. Your paper should be 1–2 pages in length, not counting the Title page and Reference page.
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Fungi tend to reproduce sexually when nutrients are limited or other conditions are unfavorable, but they reproduce asexua ...
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The Challenge for this weeks worksheet is to use the numbers obtained by a student to complete the “Identification of un ...
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The Challenge for this weeks worksheet is to use the numbers obtained by a student to complete the “Identification of unknown Metal Carbonate” pages in the lab manual (pg 65-66) then submit a pdf copy to the Gradescope page. Deadline Friday Oct 9 at 5 pm. A video of the experimental basics is athttps://www.youtube.com/watch?v=V6jP1Jt59Xc To prepare for the experiment you need to read the lab manual pg 59-63, paying specific attention to how the mass percent of CO2 is determined for a compound. You will need to calculate Mass percent of CO2 for each of the Carbonates listed in table 9-3. Remember that if you have a “hydrate” as shown on page 60, you must use the entire Molar mass including the number of water molecules to find the correct theoretical percent CO2. The goal is to use the numbers generated by a student to find your unknown. The scene: A student weighed a beaker and test tube, mass was determined as 129.02 g. Some Lithium Carbonate was added and now the mass was 130.22 g. Acid was added to the test tube and the total mass before reaction was 139.73 g. The acid was dumped into the beaker (see video for observations) and now the entire assembly weighed 139.01 g.It is up to you to use these numbers to make sure you know how to do the calculations and get the correct mass percent for Lithium Carbonate. Next the student took an unknown carbonate and performed the same steps, repeating for accuracy. Items weighed Trial 1 Trial 2 Beaker + test tube 136.14 g 134.75 g Beaker + test tube +carbonate 137.25g 136.04 g Beaker + test tube +carbonate + acid 146.87 g 148.22 g Mass of assembly after reaction 146.69 g 147.99 g The calculations and questions to answer: Use this information to fill in the tables on pg 65, in table 9-1 you should be able to obtain the correct mass percent for Lithium Carbonate. This allows you to make sure you understand the process.Fill in the data table 9-2 for your unknown carbonate. Find the Mass % of CO2 in the unknown carbonate, compare to table 9-3 ( that you filled out in the preparation for this lab) and name which unknown you have.Find the % error in your results (question 1) remembering that the error is an absolute value.Watch the video again to think about sources of error. List 3, and decide which could have the greatest impact on your results.Apply what you learned when calculating % CO2 in a carbonate, and calculate % Cl in Group II metal chlorides. It is the same procedure, but now you are considering chlorine instead of CO2. If you do not remember what Group II is, use your textbook to refresh your memory. Remember to show calculations for all sections.
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