dram vial inside the Erlenmeyer flask when the ending volume of N2 gas was recorded. The experimenter shaking and swirling the flask stopped prematurely believing that the reaction was complete. Since all the gas bubbles weren’t released‚ the gas pressure wasn’t completely accurate. With excess gas still remaining in the Erlenmeyer flask‚ the meniscus level was higher on the measuring tube than it should have been. Thus‚ the recorded value for the volume of N2 gas collected was less than it was actually
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maintain their GPA to a certain point in order for them to stay in school‚ passing the classes and getting good grades are one of the most concerning issues for a lot of students. In addition to academic stress‚ students often feel financial pressure. Most of the college students work part-time while attending college. They have more responsibilities than just maintaining their GPA. Paying for their school tuition and textbooks are
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right tossing quantity 2. filter cloth bad washing result Maybe caused by: Low washing water pressure or few quantity for washing water washing nozzle was fulled by solids and spray water easily shooting method: increase washing water pressure or flow rate clean washing nozzle 3. always a great quantity of slurry leakage at the first at the first squeezing roller Maybe caused by: high squeezing pressure poor flocculant result too big flow rate for slurry feeding fast movement for squeezing belts
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Number of Moles of Mg | 0.001834 | 0.001842 | 0.001785 | 0.001867 | Initial Eudiometer Reading‚ mL | 0 | 0 | 0 | 0 | Final Eudiometer Reading‚ mL | 45.4 | 47.9 | 42.5 | 43.6 | Volume of Gas‚ L | 0.0454 | 0.0479 | 0.0425 | 0.0436 | Barometric Pressure‚ mmHg | 761.238 | 761.238 | 761.238 | 761.238 |
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Peer pressure within a society can cause even the strongest person a significant impact on their lives. ISP English Essay Grade 11 Mulin Li Griet is a young girl living in 17th century Holland who is observant and smart. When she was young‚ she lived happily with her parents and her two younger siblings. It seemed like her family was inseparable and they loved each other very much. How is it now that she is a butcher’s wife and emotionally scarred for life? No matter how hard they try to
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energy is required to overcome these attractive forces since the molecules are relatively small. Therefore‚ the liquid vaporizes easily and quickly at temperatures less than 100°C. While the substance is in the vapor phase‚ you can measure its volume‚ pressure‚ and temperature. You can then use the ideal gas law to calculate the number of moles of the substance. Finally‚ you can use the number of moles of the gas to calculate molar mass. OBJECTIVES In this experiment‚ you will • Evaporate a sample
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This statesthat “equal volumes of gases at the same temperature and pressure contain the same number of molecules regardless of their chemical nature and physical properties. Molar volume is the volume (22.4 L) occupied by a mole of a substance at STP. The chemical equation for this lab is magnesium plus hydrochloric acid yields to hydrogen gas plus magnesium chloride. The combined gas law explains the relationship among the pressure‚ temperature‚ and volume of an enclosed gas. Also the combined gas
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of ability to do their jobs too which may cause them to get unemployment. There are many reasons why students like cheating‚ but according to some researchers‚ there are top three reasons why students are likely to cheat: lack of effort‚ external pressures and opportunity. To begin with‚ cheating is likely to be occurring on students who are lack of effort in their studying. Students who did not attend class or did not study are considered to be lack of effort students. Those students are rare
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OF CONTENT Task Title E1 Relationship between pressure and volume of a gas E2 Newton’s second law of motion E3 Centripetal force E4 Focal length of a convex lens E5 Internal resistance of a battery Physics and CS(Physics) Sample SBA Task Practical Skills ( %) Reporting %) ( Total E1 Relationship between Pressure and Volume of Gas Name : Class : No.: Date : Objectives: To investigate the relationship between pressure and volume of air in a syringe. Apparatus: 60 cm3
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