materials • To observe potential hazards • To investigate the effects of strong bases‚ strong acids‚ acetone and bleach on a variety of materials which include sugar‚ cotton‚ nylon‚ hair‚ polystyrene‚ egg white‚ egg yolk‚ and aluminum foil. 2. Give a summary of your observations for each of the experiments. (24 pts) Sugar + H2SO4 Black clumped substance formed C12H22O11(s) + H2SO4 12C(s) + 11H2O(g) Cotton + HCl No visible change Cotton + H2SO4 Slight color change (light reddish brown)
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THE WONDERFUL HYGENIC WORLD OF SHAMPOO Everyone who uses shampoo could tell you that their main factors in choosing a shampoo to use are smell‚ look‚ and price. People are misinformed about shampoo and how to tell the difference between a good shampoo and a bad one. The main point of shampoo is to cleanse your skull of residue that is picked up either from hair products such as hair spray‚ gel or moose‚ as well as the dirt in the air‚ and perspiration. Shampoo is something that all of us use on
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“Never give up” When someone says you cannot do something‚ it’s only a better opportunity to prove them wrong. Tearing my ACL was one of the worst days of my life. It was my senior year in high school‚ my last year to prove a point. I was hoping I would be recognized‚ I wanted to show that it was my turn to make something out of myself. I went up for the ball and “WHOMP!” My leg flew forward. I fell to the floor more shocked then in pain. I didn’t know what to do. I called my mom and she rushed
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dissolve. Conclusion: 1. What two factors did you investigate in you procedure‚ and why did you choose to compare these two factors? I chose to compare the Alka-Seltzer and temperature. I chose these two because they seemed like they would give me the best idea of what I was looking for. 2. What other factors did you need to control during your investigation? Explain how you controlled each one in your procedure. I needed to control the amount of water‚ temperature‚ the number
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wanted to expant beyong USA (most famous: T Roosevelt) Expansionism in Pacific Midway Island: first place annexed outside the US with a naval base Hawaii: Reciprocity Treaty 1875: Hawaii ships sugar to US “duty free” (no tariff/tax) and cant give territory to anyone else (Americans moved here to make plantations) 1880s: US gets right to build Pearl Harbor Queen Liluokalani “Hawaii is strictly for Hawaiians” (Sanford dole-banana‚pineapple-asked for US help USS Boston shows and Lil surrenders
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Box-Jenkins Modeling and Forecasting of Monthly Electric Consumption of PANELCO III Customers ______________________________ A Special Problem Presented To The Panel of Evaluators Mathematics Department Pangasinan State University Urdaneta City _______________________________ In Partial Fulfillment of The Requirement for the Degree of Bachelor of Science in Mathematics Major in Statistics ______________________________ By: Jake Anthony E. CantubaMarch 2014 APPROVAL SHEET In partial
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Chem 30A Ch.1-4: Condensed Chang’s Class Notes Chapter 1 Valence electrons octet rule exceptions P and S can have 10 or 12 valence e- B and Al (Group 3) can have 6 valence e- electronegativity- how much an atom wants e- < 0.5 = nonpolar‚ covalent (i.e. H2) 0.5 - 1.9 = polar covalent direction of polarity (using arrow and delta symbol) overall dipole > 1.9 = ionic formation of ions fish-hook arrow Lewis structure formal charge Functional Groups Molecular Shape VSEPR (Valence Shell
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through hell‚ keep on going. Never never never give up The quit where a huge part of you wants to give up. The quit you make when you the world is against you‚ when you’re sick to your stomach half the time and when all those who told you it was a dumb idea to begin with are now reminding you that they told you that it was a dumb idea to begin with. The quit that just feels easier. So what do you do when feel that kind of quit coming on? Simple. Never give up.But just because it’s simple doesn’t mean
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green;520nm green;525nm yellow;575nm yellow;580nm red;700nm red;710nm red;720nm red;745nm Mercury- blue;430nm blue;450nm green;540nm green;550nm yellow;570nm 4. Describe the line spectrum of the star. Give the color and wavelength value of the five brightest lines in the spectrum.: purple-420nm blue-440nm turquoise-500nm yellow-580nm red-700nm Conclusion: 5. Explain‚ in your own words‚ why different elements produce different colors of light when
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Additional Questions: 1. H H H C C H H C C H C H H C H H Compound A Compound A is an intermediate compound found in a production plant attempting to synthesise n-hexane. a) List three physical properties of alkynes. b) Give the IUPAC name of compound A. [3 marks] [2 marks] c) There are several ways to form the final product from Compound A. An operator has decided to use Pt catalyst to react with Compound A. Write the complete chemical reaction equation. [3 marks] d) The quality assurance
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