What factors affect the Rate of a Reaction Essay Example For Students

What factors affect the Rate of a Reaction? Essay ObjectiveCompare the rates of reaction under varying conditions. MaterialsSafety goggles, lab apron, magnesium ribbon, scissors, metric ruler, 25-mL graduate, hydrochloric acid, 50-mL Erlenmeyer flask, 250-mL beaker, timer. ProcedureA. Wear safety goggles and lab apron throughout this activity. We will write a custom essay on What factors affect the Rate of a Reaction? specifically for you for only $16.38 $13.9/page Order now B. Draw a data table like the one shown. C. Cut a piece of magnesium ribbon 2cm long. D. Measure 10mL of hydrochloric acid and pour it into an Erlenmeyer flask. E. Place the flask in a 250-mL beaker half full of cold tap water. Chill the flask for 3 minutes, then take it out of the water. CAUTION: Hold the flask so that it doesnt tip over into the water. F. Carefully slide the magnesium strip into the acid. CAUTION: Be careful not to splash the acid when adding the magnesium. G. Record the time needed to dissolve the magnesium in the acid. H. Empty and wash the flask according to your teachers instructions. I. Repeat steps C and D. J. Warm the flask in a 250-mL beaker half full of very hot tap water for 3 minutes. K. Carefully slide the magnesium into the acid. L. Record the time needed to dissolve the magnesium in the acid. M. Empty and wash the flask. N. Measure 10mL of hydrochloric acid and pour it into the flask. O. Cut a piece of magnesium ribbon 2cm long. P. Roll the magnesium ribbon into a tight ball. Q. Carefully slide the magnesium metal into the acid. R. Record the time required to dissolve the magnesium in the acid. S. Empty and wash the flask. T. Measure 10mL of hydrochloric acid and pour it into the flask. U. Cut a piece of magnesium ribbon 2cm long. V. Cut the magnesium ribbon into fine silvers. W. Add the magnesium to the acid in the flask. X. Record the time required to dissolve the magnesium in the acid. Y. Empty and wash the flask. ReactantsTimeMagnesium, HCl (Cold)49 secondsMagnesium, HCl (Hot)30 secondsMagnesium (rolled), HCl40 secondsMagnesium (silvered), HCl52 seconds

Free Essays on Laptops

Should children use laptops in school? A number of school are testing out laptops in classroom settings. Laptops can be very helpful learning tools by getting computers into the hands of people who might not be able to afford one at home. Not everyone agrees its a good idea, however. Laptops can be expensive, difficult to set up, and (in some cases) distracting. Statement of the Topic The topic is Laptops in the classroom. My research will be conducted on the ways in which laptops are currently changing students curriculum and behavior. I willbe focusing my research on elementary schools, and whould therefore like to examine the changes that laptops have brought to education. Method Section I am currently working on a survey designed to evaluate student laptop use. This Survery has the following objective. - to determine how students were using their laptops both in and out of class. - to gather information on student satisfaction with educational experience. - to obtain student in put on how the laptop program might be improved.The Statement of the Hypothesis The purose of the study is to explore wether we should support or not support laptops in the classroom. My hypothesis is that laptops are a disadvantage to be used by children in school and should therefore not be supported Research Participants. The sample oblainedfrom 6 grade class, consisted of 9 boys and 12 girls are using laptop in the classroom. Review of Related Iiterature Should conventional learning tools be replaced by laptops? We have all read about places trying to accomlish a paperless environment, and we have all thought about how laptops may some day replace textbook. I think that we should take this one step further. Should laptops replase other conventional learning tools. Do we think that in the future laptops can and will replace many of the things that found in classroom today. Paper, pencils, books, calculators, notebooks. We... Free Essays on Laptops Free Essays on Laptops Should children use laptops in school? A number of school are testing out laptops in classroom settings. Laptops can be very helpful learning tools by getting computers into the hands of people who might not be able to afford one at home. Not everyone agrees its a good idea, however. Laptops can be expensive, difficult to set up, and (in some cases) distracting. Statement of the Topic The topic is Laptops in the classroom. My research will be conducted on the ways in which laptops are currently changing students curriculum and behavior. I willbe focusing my research on elementary schools, and whould therefore like to examine the changes that laptops have brought to education. Method Section I am currently working on a survey designed to evaluate student laptop use. This Survery has the following objective. - to determine how students were using their laptops both in and out of class. - to gather information on student satisfaction with educational experience. - to obtain student in put on how the laptop program might be improved.The Statement of the Hypothesis The purose of the study is to explore wether we should support or not support laptops in the classroom. My hypothesis is that laptops are a disadvantage to be used by children in school and should therefore not be supported Research Participants. The sample oblainedfrom 6 grade class, consisted of 9 boys and 12 girls are using laptop in the classroom. Review of Related Iiterature Should conventional learning tools be replaced by laptops? We have all read about places trying to accomlish a paperless environment, and we have all thought about how laptops may some day replace textbook. I think that we should take this one step further. Should laptops replase other conventional learning tools. Do we think that in the future laptops can and will replace many of the things that found in classroom today. Paper, pencils, books, calculators, notebooks. We...

Supply Chain Management Case Study Example | Topics and Well Written Essays - 250 words

Supply Chain Management - Case Study Example Sonnie’s Gourmet Sandwich Cafà © is the newest cafà © in the local and the most frequented by working clients with limited time to wait especially now that the cafà © is experiencing an out of door line for customers during the two hours lunch break. In light of this, Sonnie should increase the number of workers in the cafà ©. Apparently, the order fulfillment process seems to take more time as compared to the order placement process. As such, there should be a professional worker who comes around in the line and collects the orders. In a general sense, the prerequisite towards improvement and maintenance of a good supply chain is that Sonnie must be time conscious on her potential clients (Shah 8). The mentioned phone is perceived to be among the busiest in the region with a high number of customers calling in for assistance. However, the staff present have experienced 11- hours working period with two-hours staggering lunch period. Essentially, this company requires an increase in the number of workers who should work in shifts for 24 hours in order to cover for the distinct places such as Nevada, Oregon and California and Washington which have different time zones. Once this is achieved, then the supply chain will automatically increase leading to a wider market for the company (Shah