background and a white background. a. NaHCO3 & HCI- bubbles form b. HCI & BTB c. NH3 (Ammonia) & 1 drop of BTB- record expected color & actual result. d. HCI & blue dye e. Blue dye & NaOCI. Record findings‚ then add 1 drop of HCI f. NaOCI & KI. Observe‚ then add 1 drop of starch. See starch turns black g.KI & Pb(NO3)2. Describe precipitate formed. h.NaOH & phenolphthalein. Observations of Chemical Changes i. HCI & phenolphthalein. With phenolphthalein &
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well of the well-plate-96 followed by two equal sized drops of a second substance to produce an observable reaction (or lack thereof). Exceptions included part C where one drop of BTB (bromthymol blue) was used and part E where an additional drop of HCI (hydrochloric acid) was added to blue dye and NaOCI (sodium hypochlorite). In part K‚ the AgNO3 (silver nitrate) and NaOH (sodium hydroxide) mixture was saturated into a paper towel and exposed to a bright light. The resulting mixtures were then observed
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between labor intensive industries and HCI‚ South Korea depended on foreign companies to achieve economic development. Chaebols helped South Korea to problems related to development of HCI with the support from government. Chaebols are similar to conglomerates that are large companies that operate in different sectors that allow the corporations to support their own businesses through the expansion in business area. Mentioned in the previous paragraphs‚ HCI needs more use of energy and increased
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What is Human Computer Interaction? Human–computer Interaction (HCI) involves the study‚ planning‚ and design of the interaction between people (users) and computers. It is often regarded as the intersection of computer science‚ behavioral sciences‚ design and several other fields of study. The term was popularized by Card‚ Moran‚ and Newell in their seminal 1983 book‚ "The Psychology of Human-Computer Interaction"‚ although the authors first used the term in 1980‚ and the first known use was in
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are able to complete tasks that would otherwise be impossible or take a lengthy amount of time to execute. One developing technology in recent years‚ Human-Computer Interaction (HCI) involved the study‚ planning‚ and design of the interaction between users and computers (Dillon‚ 2002). Research suggests that because HCI studies a human and a machine interactively‚ that is draws from supporting knowledge on both the machine and on the human aspect of the technology (Dillon‚ 2002). For example‚ information
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Human–computer Interaction (HCI) This paper I will briefly summarize a few paradigms within Human-Computer Interactions (HCI)‚ and the comparison between them. I will also define Human-Computer Interaction (HCI) . I will be utilizing the 5W+H (What‚ Where‚ When‚ Who‚ Why and How) analytical format . I’m going to discuss the factors that makes HCI a everyday usage. Definition Human–computer Interaction (HCI) involves the study‚ planning‚ and design of the interaction between people (users) and
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different solutions to the test tubes (pepsin‚ distilled water‚ HCI‚ and NaOH) Controlled variable: *the same amount of solution poured into each test tube *ensuring that each test tube is clean Responding variable: *The pH levels and the size of the egg white Materials: Hydronium pH paper 6 large test tubes (22*175mm) 10 mL graduated cylinder 10% pepsin solution Knife Tweezers or forceps Wax pen 1.0 mol NaOH solution 1.0 mol HCI solution Hard-boiled egg Metric ruler Plastic gloves Procedure
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Research on the Human Computer Interaction of E-learning Shu-mei Zhang 1‚ Qin-chuan Zhan 1‚ He-min Du 2 I School of Art & Design‚ Shaanxi University of Science & Technology Xi ’an‚ P.R.China 2 sjxy@sust.edu.cn xtdn-dhm@126.com Institute of Industrial Design‚ Northwestern Polytechnic University Xi ’an‚ P.R.China Abstract-Although the hardware and software technology affect the development of E-Iearning technology‚ but human computer interaction factor determines the ultimate learning
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neutralization for the reaction of sodium hydroxide (NaOH) and hydrochloric acid (HCI). Requirement The heat of neutralization (∆Hneutzn ) is the heat transferred when 1 mol of an acid reacts with 1 mol of a base. This heat is generally reported in either kilojoules per mole (kJ/mol) or kilocalories per mole (kcal mol). The reaction of HCI and NaOH solutions is shown in Equation 1. HCI(aq) + NaOH(aq) H20(l) + NaCI(aq) (Eq. 1)
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between a variety ofchemicals and some indicators.The following observations were made: NaHCO3 and HCI – CO2 HCI and BTB NH3 and BTB HCI and blue dye Blue dye and NaOCI NaOCI and KI KI and Pb(NO3)2 NaOH and phenolphthalein HCI and phenolphthalein NaOH and AgNO3 AgNO3 and NH3 NH3 and CuSO4 Data Tables: Data Table 1: ReactionsReaction Question/WellNumberA/H12 Chemicals NaHCO3 and HCI - CO2 When I added the hydrochloric acid to the sodium bicarbonate it began to bubble
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