9.5 Tests for halogens and halide Ions Test for halogen Test method Test observations Test chemistry and comments Chlorine gas Cl2 A pungent green gas. (i) Apply damp blue litmus. (Can use red litmus and just see bleaching effect.) (ii) A drop silver nitrate on the end of a glass rod into the gas. (i) litmus turns red and then is bleached white. (ii) White precipitate. (i) Non-metal‚ is acid in aqueous solution and a powerful oxidising agent (ii) It forms a small amount of chloride ion in water
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because they become emotionally attached to them over a period of time. Rob Walker‚ including Diane Cole‚ the author of the article “Bookmarks‚ Possessed by Our Possession” and Carina Chocano‚ the author of the article "‘Underneath Every Hoarder Is a Normal Person
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Statistics Math 1342 Final Exam Review Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Provide an appropriate response. 1) A card is drawn from a standard deck of 52 playing cards. Find the probability that the card is an ace or a heart. 17 7 3 4 A) B) C) D) 52 52 13 13 Answer: D 2) The events A and B are mutually exclusive. If P(A) = 0.7 and P(B) = 0.2‚ what is P(A or B)? A) 0.5 B) 0.9 C) 0.14 D)
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Explain why the distribution B(n‚p) can be approximated by Poisson distribution with parameter if n tends to infinity‚ p 0‚ and = np can be considered constant. 2. Show that – and + are the turning points in the graph of the p.d.f. of normal distribution with mean and standard deviation . 3. What is the relationship between exponential distribution and Poisson distribution? II. Computation of probability (7%) 1. Let the random variable X follow a Binomial distribution
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mothers‚ while the younger sister’s speech touched the younger sisters out there‚ including myself. Evidence to support the claim is that the girl who was killed in the film never thought it would happen to her. Like the family said‚ "It was just a normal day." Texting and driving is obviously dangerous‚ due to her death. The evidence makes the claim more trustworthy. People
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Western cities‚ Hong Kong’s MTR enjoys a very low crime rate. With a reference to environmental criminology‚ explain why this is the case. Hong Kong MTR is one of the busiest underground transit systems in the world with around 4 million person-time passenger per day. (MTR‚ 2010a) In 2007‚ Hong Kong MTR annual ridership was the seventh highest in the world. (MTA‚ 2010) Meanwhile‚ this is our proud that Hong Kong MTR has a low crime rate‚ it helps to maintain MTR to be one of the famous underground
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P6–1 Interest rate fundamentals: The real rate of return Carl Foster‚ a trainee at an Investment banking firm‚ is trying to get an idea of what real rate of return investors Are expecting in today’s marketplace. He has looked up the rate paid on 3-month U.S. Treasury bills and found it to be 5.5%. He has decided to use the rate of change In the Consumer Price Index as a proxy for the inflationary expectations of Investors. That annualized rate now stands at 3%. On the basis of the information
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Heart Rate Experiment Introduction: The heart rate measures the contractions of your heart and is a requirement for life. The heart uses four chambers. The right and left-lower chambers are called ventricles‚ and right and left-upper chambers are called atria. These four chambers complete two cycles that replenish the tissues with oxygen and get oxygen from our lungs. The heart rate is measured in beats/ minute and a “beat” is when the lower chambers are (two ventricles) contract. This
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What happened to the R-R interval and heart rate after exercise? After exercise the R-R interval increased steadily from 0.48 to 0.68 seconds‚ while the heart rate BPM decreased steadily from 123 to 76; both trending back towards the resting values. What happened to the T-P interval during exercise? Outline what this means for ventricular filling time. During exercise there was a significant drop in the T-P interval which then steadily increased when exercise was completed. The T-P interval represents
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