Chemistry 11 Santa Monica College Determination of Molecular Mass via the Dumas Method Objectives: • To determine the molecular mass of an unknown volatile liquid using the Dumas method and the ideal gas law. Background: In the early 19th century‚ Jean-Baptiste Dumas‚ a distinguished French chemist‚ created a relatively simple method for determining the molecular mass of a volatile substance. In this experiment we will use a modified version of his technique to determine the molecular
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Designer Profile Collette Dinnigan started her career in fashion in New Zealand attending Wellington Polytechnic in her late teens. After she graduated‚ she moved to Australia to begin working for the Costume Department of the Australian Broadcasting Commission in Sydney. In her time working at the Costume Department of the Australian Broadcasting Commission‚ Dinnigan developed an acute attention to detail and an authentic perspective on fabrication and design. External Factors Influencing Dinnigan
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they do not get out of order as from time to time do the pH-meters. Four buffers (Acetate buffer‚ phosphate buffer‚ ammonium buffer and an unknown solution) were tested with eight different indicators. The method employs the use of complex organic dyes which change to distinctive colors through a specific pH range of the buffer solutions giving the acid and base color that was used in identifying the pH range. The obtained result of each group is relatively close to the theoretical results. The outcome
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observed and recorded. In column 1 row C; two drops of NH3was combined with two drops of BTB. The results were observed and recorded. Next‚ in column 1 row D‚ two drops of HCl was combined with two drops of Blue Dye. The results were observed and recorded. In column 1 row E; two drops of Blue Dye was combined with two drops of NaOCl. The results were observed and recorded. In column 1 row F; two drops of KI was combined with two drops of Pb(NO3)2. The results were observed and recorded. Then one
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two problems about tattoos. First the dangers of Needles. Second‚ the dangers of Dyes or ink. First let me talk about the problem with Needles: By using unsterile needles‚ infections can be transmitted with serious illnesses such as (HIV and hepatitis C and B) these diseases cause damage to the liver. And even other disease like Blood borne diseases and Granuloma.
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Celsius and had a humidity level of 30%. The animals were then split up randomly into four groups‚ with eight rats in each group‚ and two rats from one litter. The first group was used as a control group‚ meaning that they were not treated with any food dyes or prenatal stress. The second group was treated with AFCs but not prenatal stress‚ the third group was treated with prenatal stress but no food colorings‚ and the fourth group was tested upon with both AFCs and prenatal stress. By performing the study
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engraved plates‚ rollers‚ or silkscreens can be used to place colours on the fabric. Colourants used in printing contain dyes thickened to prevent the colour from spreading by capillary attraction beyond the limits of the pattern or design. Traditional textile printing techniques may be broadly categorised into four styles: Direct printing‚ in which colourants containing dyes‚ thickeners‚ and the mordants or substances necessary for fixing the colour on the cloth are printed in the desired pattern
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Industrial Training at The Delta Composite Knitting Ind. Ltd (DCKIL) for 52 days INTRODUCTION Praise to Allah‚ the creator and sustainer who has given us strength and opportunity to complete our eight weeks long industrial attachment at “The Delta composite Knitting Industry Ltd”; in Zarun (South)‚ Kashimpur‚ Gazipur. At the beginning we would like to pay our gratitude toour academic supervisor prof. Dr. S.MMahbub- ulHaqueMajumder‚ Dean‚ Faculty of Science & Information Technology
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Technicolor Research Topic Report: Sound and Image. This is a written report where my partner on the topic and I presented a ten minute oral summary of our chosen research topic on Technicolor. We chose Technicolor as we felt it had most to say to us‚ threw the progression of the technology the problems threw out the years of perfecting the technology‚ to the ultimate glory of the Technicolor experience. As we didn’t know too much on Technicolor we were quite eager and wanted to broaden our
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#3. Name the types of microscopes. Simple Microscopes Compound Microscopes Scanning Electron Microscope Transmission Electron Microscope #4. Identify these stains: (Functions and Reagents) Simple Stain- CULTURES: Staphylococcus epidermis slant Bacillus megaterium broth MATERIALS USED: Methylene blue‚ Distilled water‚ Slide‚ Inoculating Loop FUNCTION: To observe shape size‚ morphology‚ and arrangement. ---FROM SOLID: (slant) 1. Mark the smears on the underside
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