(0.10+0.10) | = 25.43 cm3 | = ± 0.10 cm3 | | | Average volume of FA2 used = (25.43 ± 0.10) cm3 | Data processing: Calculations | Propagation of uncertainties | | | Amount of FA1 = Mass of FA1Molar mass of FA1 = 1.5002*12.01+ 6*1.01+ 6*16.00 = 0.011897 molAmount of FA3 = Amount of FA1Concentration of FA3= Amount of FA3 / Vol of FA3 solution= 0.011987 / (250/1000)= 0.047589 mol dm-3Amount of FA3 in 20.0cm3 of FA3= 0.047589 x 20.00/1000= 0.0009518 molMole ratio of FA3:FA2 used is
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the 2nd part of the Lab: If we cover the side of the balloon with cellophane tape‚ then it will not pop when pierced with the pin. Materials: • Balloons • Long wooden skewer • Petroleum jelly • A sharp pin • Cellophane tape • A pencil • Paper Pre-Lab Questions: 1. The balloon is being tested and analyzed 2. We are using sight and touch 3. Independent= petroleum jelly Dependent= the balloon 4. Controls= Petroleum jelly Constant= the cellophane tape and a sharp pin Pre-Lab Questions
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Tim Bruce The subject that I will be focusing on through the course of this extra credit paper‚ is one about the combination of Aerospace Engineering and Chemistry. I chose this particular topic because of my future life goals. Which include getting a degree in aerospace engineering. I also became interested while researching for this paper in a particular sub topic of the two which is called aerothermochemistry. Aerothermochemistry is the study of gases which takes into account the effect
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the Alka-Seltzer in the water again and see how long it takes it to dissolve with the new temperature. 4. Now we need 16oz of water at 25 degrees Celsius. 5. Drop one Alka-Seltzer in the water and record how long it takes it to dissolve. 6. Then you need to change the temperature of the water and add one Alka-Seltzer and see how long it takes for it to dissolve. Conclusion: 1. What two factors did you investigate in you procedure‚ and why did you choose to compare these two factors
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guanidine nitrate. ... 200g sulphamic acid and 124g urea were mixed in a shallow Pyrex bowl and ... [PDF] Instructions for HACH HR Nitrate Analysis www.d.umn.edu/~dlong/.../Instruction-Nitrate-HR-TNT836.pdf Nitrate. Nitrate. Page 5 of 6. Summary of method. Nitrate ions in solutions containing sulfuric and phosphoric acids react with 2‚6-dimethylphenol to form 4-nitro-2 ... chemical denitrification of nitrate from groundwater via sulfamic acid ... core.kmi.open.ac.uk/display/537620
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Curium is highly radioactive. As a metal‚ it is lustrous and silvery. It is malleable‚ chemically reactive and electropositive. Its surface rapidly oxidizes in air‚ gaining a thin film. Most compounds of trivalent curium are stable and faintly yellow or yellow-green. If absorbed in to the body‚ curium accumulates in the bones. Its radiation destroys red blood cell formation. Consequently‚ curium is considered very toxic. Large quantities of curium are now easily made in nuclear reactors. A nuclear
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He a lt h 0 3 2 3 Fire 0 Re a c t iv it y 2 P e rs o n a l P ro t e c t io n Material Safety Data Sheet Sulfuric acid MSDS Section 1: Chemical Product and Company Identification Product Name: Sulfuric acid Contact Information: Catalog Codes: SLS2539‚ SLS1741‚ SLS3166‚ SLS2371‚ SLS3793 CAS#: 7664-93-9 Sciencelab.com‚ Inc. 14025 Smith Rd. Houston‚ Texas 77396 RTECS: WS5600000 US Sales: 1-800-901-7247 International Sales: 1-281-441-4400 TSCA: TSCA
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Explain‚ in your own words‚ why different elements produce different colors of light when heated.: The energy levels of elements and of their atoms are different. When heated all the molecules jump around into wavelengths that we perceive as color. 6. Why do you think elements must be heated before they emit colored light?: The heat added to the elements adds energy to excite all of the electrons in the atoms. When that
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Chemistry Lab Write-Up Title: Paper Chromatography of Powdered Beverage Mix Purpose/Objective: The purpose is to be able to use liquid chromatography to separate dyes in a powdered beverage mix‚ calculate the Rf values for each dye‚ and rank the polarity of each dye present. Hypothesis: If we are to use the liquid chromatography to investigate the different dyes‚ then I think the different dyes will come up having different polarities and Rf values. Procedure/Method: Draw a line across
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Wavelength‚ frequency‚ and amplitude and energy. As a person in science‚ i should know the order of colours in the visible spectrum and the span of visible wavelengths. Question: if light is a .. Answer: max planck proposed that e.m radiation comes in units of defined energy rather than in any arbitrary quantities. Planck called it quantum The Photoelectric Effect Planck’s theories were used to explain a number of observations that had been troubling scientists. Einstein extended
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