MODULE 2 WORKSHEET 6 CALCULATIONS INVOLVING GASES Syllabus reference 9.3.2 1 Two identical gas flasks‚ A and B‚ are kept at the same temperature and pressure. Flask A contains 10 g of ethane gas‚ C2H6. Flask B contains sulfur dioxide gas‚ SO2. Calculate the mass of sulfur dioxide gas in flask B. moles ethane 10/30 0.33 mol moles SO2 0.33 mol mass SO2 0.33 64 21 g 2 What mass of nitric oxide‚ NO‚ is present in a 2.5 L flask at a pressure of 100 kPa and 0ºC? mole NO 2.5/22.71
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Class average for a 80 and 120 drop count was recorded to be 0.041+/- 0.005 mL/drop. If a graduated cylinder is not available there is another way of adding more of the solution. The disposable pipet can transfer 0.5mL of the solution to the chemical reaction. When comparing a 10mL graduated cylinder‚ a 100mL beaker‚ and a 50mL graduated cylinder‚ the most precision peace of glass wear would be the 10 mL graduated cylinder with the true volume of water (calculated)‚ class average‚ and uncertainties
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06.03 Calorimetry: Lab Report Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Instructions: This is a two-part lab. Be sure to follow all steps given in the lab and complete all sections of the lab report before submitting to your instructor. Procedure: Part I: Determining the Specific Heat of a Known Metal 1. Place a plastic measuring trough on top of the digital balance‚ and press the "tare/on" button so that
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University Sub: Submission of Term paper. Dear Sir‚ We want to inform you that we have completed the report on the topic “STARBUCKS”. Our report focuses on the STARBUCKS s products‚ upcoming challenges; reasons behind success‚ difference with other Coffee houses & irrelevant procedures to attract to the beverage oriented people‚ future assessments and some recommendation. The report has been prepared for the completion of our course “Business Communication” (BUS 231). In writing this case‚ we have
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Proposal: Second Cup Second cup was seen a popular coffee house for many Canadians‚ focusing on a comfortable and warm atmosphere for its customers to socialize with friends or catch up on some work. Known as one of the higher class coffee houses‚ Second Cup offers many specialty beverages and sweet treats‚ in addition to Wi-Fi access in all of their franchises. The purpose of selecting Second Cup for the IMC is because they have to some extent ‘dropped off the map’. This coffee house has for the
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Omar Feddersen Professor Bahgat QU 301 21 February 2011 Memorable Quotes from Greg Mortenson Throughout the novel “Three Cups of Tea‚” the author Greg Mortenson learns several significant lessons about the Middle East during his time spent in the area. Greg Mortenson is one of only a handful of Americans who believes we need to have patience when dealing with the Middle East especially combating terrorism. He believes that the best way to do this is to establish an education system where
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« Can the World Cup bridge South Africa’s sporting divide? » 1. In what ways are South African sports divided along racial lines and what factors perpetuate this “segregation”? Racial segregation has ruled the major part of South Africa’s History and seems to remain along time. Though apartheid has been abolished in 1994‚ black and white populations stick to old habits regarding certain fields. If you look closer into sports‚ for instance‚ you will discover that some are considered for
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Post lab The unknown solution 4055 was tested by the separation scheme in order to identify the four cations that exist in it. The cations found were Ag+‚ Ba2+‚ Mn2+‚ and Ni2+. When I added 5 drops of 3M NaCl to the unknown solution‚ we had some precipitate‚ we centrifuge and then we divided to two test tubes‚ and they were put in hot water and got confirmatory tested. The Ag+ appeared to be in the solution because it melted‚ however Pb2+ didn’t. With the rest of the solution we added Na2SO4 we had
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1 Weigh the beaker. 2 Add 50 milliliters of the solution you want to test to the beaker and record its mass. The mass of the solution is equal to the total mass minus the mass of the beaker. 3 Divide the mass of the solution by its volume -- in this case‚ 50 milliliters -- to find its density. 4 Empty‚ rinse and dry the beaker. Add 4.3 grams of sugar to the empty beaker‚ then add water until the contents reach 50 milliliters in volume. Stir until the sugar dissolves‚ then measure the
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1. The final yield of the cells can be determined by use of an automated cell counter or by use of a hemocytometer (Neubauer chamber). In our laboratory‚ we determine the number of purified cells in a Neubauer-improved‚ bright line chamber with V-slash with a depth of 0.1 mm and a counting area of 0.0025 mm2 from Marienfeld (Lauda Königshofen‚ Germany‚ PN # 0650030). 2. For determination of the final cell yield‚ mix a 10 µl aliquot of the purified cells (Figure 9D) with 10 µl of trypan blue solution
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