Experiment #6: Colorimetric Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of
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Lab 7: Determination of Water Hardness Using a Titrator Name: Kyndal Petrie Lab Partners: None Date of Experiment: July 19‚ 2013 Location: My house Course Number: Che112 Abstract: This experiment was to determine the hardness of the local water supply. I determined that from the 1mg of EDTA used to turn the mixture blue‚ that the water from my tap is moderately soft. Experiment and Observation: In this experiment I developed a familiarity with the concept
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Length: Ongoing throughout the school year Topic: The Melting Pot of America Content: Students are unaware of the many cultures that make up the “Melting Pot of America”. Our classes forget to put a focus on the different cultures that make up our communities and country. This activity was designed to put a focus on that and to help students embrace their differences and their assets that the bring to their very own classroom. SIOP Points Displayed: • Hands- on activities • Reported definitions
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a worker’s attitude to enhance job satisfaction. Of course‚ the above statements have puzzled motivational scholars‚ psychologists‚ and individuals such as myself for many years‚ but I will examine these concerns in this paper. What is Self-Determination Theory
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Tossed Salad Vs. Melting Pot In discussions of tossed salad and melting pot‚ a controversial issue is whether or not tossed salad is better than melting pot. Tossed salad represents multiculturalism. The tossed salad is colorful and it has unique and different ingredients it has the tomatoes‚ the lettuce‚ the cucumbers‚ the red and green and orange bell peppers and other ingredients. Each ingredient has its own unique color‚ texture and taste. What unites all these ingredients though is the
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“The USA was not a ‘melting pot’ but a ‘mosaic’ of different cultures in the period 1890-1910’ Do you agree? According to some historians‚ the USA in 1890 had become a ‘melting pot’ of different cultures‚ meaning that the people who had immigrated to America had left their old traditions behind to start a new country free from outdated laws; this idea was also linked to American Exceptionalism as America was ‘Exceptional’ for these reasons. Many historians argue against this idea as there is plenty
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chap 17: 1) Which of the following variations on translation would be most disadvantageous for a cell? A) translating polypeptides directly from DNA B) using fewer kinds of tRNA C) having only one stop codon D) lengthening the half-life of mRNA E) having a second codon (besides AUG) as a start codon a 5) A particular triplet of bases in the template strand of DNA is 5’ AGT 3’. The corresponding codon for the mRNA transcribed is A) 3’ UCA 5’. B) 3’ UGA 5’. C) 5’ TCA 3’. D) 3’ ACU 5’. E) either UCA
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Preparation of t-Butyl-Chloride March 8 & 15‚ 2012 Theory: Alkyl halides can be synthesized when alcohols react with hydrogen halides. An alkyl halide is a halogen-substituted alkane‚ and a hydrogen halide is a compound consisting of a hydrogen bonded to a halogen (H-X). Alkyl halides are classified as primary‚ secondary‚ or tertiary depending on the number of alkyl substituents directly attached to the carbon bearing the halogen atom. The purpose of this laboratory experiment was to prepare
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experiment was designed to investigate and compare the rates at which different aspirin tablets dissolve in both Water (H2O [representing saliva]) and Hydrochloric Acid (HCl [representing the stomach’s acid]). The amount of Water and Hydrochloric Acid will be kept constant between tablets‚ and tests. Aim To investigate and compare the rates at which different Aspirin Tablets dissolve. The different kinds of Aspirin tablets are: Enteric Coated Tablets Capsules Regular Tablets Dissolving Tablets
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world’s ice is slowly melting‚ so that also means our glaciers are melting (shrinking). This is a problem worldwide. The oil‚ coal‚ natural gases‚ and fossil fuels we burn affect our atmosphere and increase the temperatures that melt our glaciers. If the glaciers continue to melt rapidly ocean levels will rise‚ there will be flooding‚ there also could be droughts. This is a very serious issue today but I’m just going to tell you about two places for now. How does the melting of glaciers affect people
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