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9. ในการไทเทรตสารละลาย NaHCO, เข้มข้น 0.10 mol/dm ด้วยสารละลาย HCI เข้มข้น 3 ะ ๕4 0.10 mol/dm อินดิเคเตอร์ที่เหมาะสมสำหรับการไทเทรตครั้งนี้คือข้อใด (H.CO. มี Ka, -7 5.0 x 10 ) เปลี่ยนสีในช่วง pH 1.2 - 2.8 = 4.4 x 10 Ka) - (แตง - เหลือง) (แดง - น้ำเงิน) (ไม่มีสี - แดง) (เหลือง-น้ำเงิน) 1. Methyl yellow 2. Limus เปลี่ยนสีในช่วง pH 5.0 - 8.0 3. Phenolpthalein เปลี่ยนสีในช่วง pH 8.3 - 10.0 4. Bromocresol green เปลี่ยนสีในช่วง pH 3.8 - 5.4

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ของคำว่า Air Conditioning Sgelerm ซึ่งก็คือระบบปรับอากา Natalie and the front-desk officer about tie complaint in her room. Then write short answers to the questions 1.isten fo the Conversafin betweern Front desk offce Hellol Front desk s speaking. Natalie:lt's Nata from theroom rurm NatalieะThe air -the fidge in m เdon't Work. Front-desk officer: t's the front-desk officer here. May 1 help you, maam? Front-desk officer: Ohl My apology, ma'am. Natalie: Can we the room? We CE here. Front-desk officer: Yes, you definitely can, maam. lwill bring youanew key card for your new room in a miทute. Natalieะ OK, We in the room. From the conversation, write short answers to these questions. What room number does Natalie have problems with? 2. What kinds of problems does Natalie have in her room? 3. What does the front-desk manager do to Solve the problems? 0 คำว่า Aircon หรือบางครั้งถูกเรียกอย่างย่อที่สุดว่า A/C เป็นภ 2 คำว่า Fridtge เป็นภาษาพูดของคำว่า Refrigerator (ตู้เย็น) ในการเรียภาษาอังกฤษต้องหลีกเลี่ยงการใช้ภาษาพูดเป็น ค้าว่า กาศร, /C และ Friว0 ถึงควรหล็กเลี่ยงเช่นกัน

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A company produces a product for which the variable cost is $12.39 per unit and the fixed costs are $96,000. The product sells for $17.30. Let x be the number (a) The total cost for a business is the sum of the variable cost and the fixed costs. Write the total cost C as a function of the number of units produced. C = (b) Write the revenue R as a function of the number of units sold. R = (c) Write the profit P as a function of the number of units sold. (Note: P = R - C.) P =

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34 - 35 / 85 ) อ Look at the pictures and unscramble. The first letter is bolded. 1. nirysudt feecrerenp 3. 4. ddcenaiat eultildfg h 5. Tetcuenilalt mlka Rewrite the sentences with a defining relative clause and the given sentence. 1. My father is very hard working. (He is a professor.) 2. Alice Monkton called the police when she heard the sound of a breaking window. (She Iives next door to the burgled house.) 3. Our physics course is taught by world-renowned professors. (It is one of three subjects this university offers dasses in.) 4. I was offereda job at Techtropolis because the interviewer liked my ambition. (Its the top tech company in my city.) 5. I talked to Daniel Myerson for most of the party. (I went to middle school with him.) Read the conversation and circle the correct answers. "My personality is quite Complex. If Im with people I know well, IFm an extrovert: I talk a lot, and Fm loud and confident. But if Irm in an unfamiliar situation, with people I don't know, 1 tend to be quiet and more introverted.I don't realy mind, though. I think being quiet has benefits. It makes me a better listener, and I can get to know new people quickly." Samira "Interesting. Im actually kind of the opposite. I love meeting new people, so when I do, I'm very excited, outgoing, and talkative. But when I'm with people whom Ive known for a long time, I'm more calm and relaxed. Oh, but even though I like meeting new people, I really don't like speaking in front of large groups of strangers. When I have to give a speech on a stage or Something like that I feel very stressed and Scared!" Ronan 1. Samira and Ronan have 2. Samira feels 3. Ronan doesnt like to 3. talk in front of groups a. very similar personalities b. very different personalities C. unchanging personalities d. not many friends a. bad that she s introverted b.confident with people she knows C. outgoing with new people d.sensitive to the quiet b. meet new people C. talk much with people he doesn't know d. be talkative with new people 35

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18:27 พ. 17 พ.ย. - 75% < BB Q A ปา My Homework My Homework Work Exercise X -absolutely badly completely changed cheap damaged happily reasonably seriously ill long enormous stightly unnecessarily unusually married planned quiet 5. Our children are normally very lively, but they re นทusually quite today. 6. When I returned home after 20 years, everything had 7. The movie was , It could have been much shorter. 0ompletely married 8. I'm surprised Amy and Joe have separated. I thought they were 9. A lot went wrong during our holiday because it was บ

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ตารางสอน 819 ๐๐๐๐ ๐๐๑๑๑ า า Let's have a look at what science and technology are preparing for us in the future. Can you imagine spending your holidays in a space hotel, having your home totally 5 computerised? What about new bones, veins and skin grown from your body cells? Homes of the Future If you like comfort, you will find it in the model home designed for the future. This model house will be wired for convenience, literally. Computer systems will link rooms, gadgets and appliances to each other and all this will be connected to the 30 Internet. 25 Space Resorts Some aerospace companies are setting up a Space Travel and Tourism Division as At the entrance, a security TV doorphone will record a picture of each visitor and it will transmit the image to monitors throughout the house. In the kitchen, appliances from the fridge to the 35 microwave oven will be programmed to order from a food delivery service and to cook recipes selected from the Internet. of the Space Transportatioท 10 part Association. One of the latest ideas is that in a few years' time you will be able to spend your vacation in a space hotel built with recycled space shuttle fuel tanks. An 15 onboard oxygen system will let guests breathe easily. The hotel will grow all its food on board hydroponically (in water containing dissolved nutrients). As soon as the guests get there, they will have an Earth- 20 like "gravity Zone" for the "space-sick." How does it sound? Will you be one of the guests to spend your holidays orbiting 322 kilometres above the Earth? Your Body Sooner than you think, scientists will grow new 40 heart valves from your own cells in laboratories. New veins and arteries will grow directly from a patient's own cells to avoid immune-system rejection. Within 10 to 20 years, laboratories will be ready to transplant hearts, livers and kidneys 45 routinely-all grown from hนman tissue in the lab. AFTER READING 5 What do these words refer to? They are underlined in the text. 4 True or false? Quote the text. 1 The space hotel will be built with recycled material. 1 its (paragraph 2) 2 they (paragraph 2) 3 it (paragraph 3) 4 it (paragraph 4) 2 In the house of the future, your fridge will be connected to the Internet. 3 There is little chance that arteries will grow from patients' cells. www How will techno affect your body future? Check or * Join the beginning of each sentence with the ending. แomr uil1 be

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2. (หพีค่ำถามปรนัย) Water molecules dissociate producing hydrogen ions and hydroxide ions. Which of the following statements is NOT true regarding the ion product of water? A At equilibrium, the product of the concentrations of the ionized ions is a constant, Kw. B In an aqueous solution the concentrations of hydrogen ions and hydroxide ions are inversely proportional. C Kw is a constant representing the ion product of water and is equivalent to 1x10 14 at 25C. D If H* is added to an aqueous solution, OH increases proportionately.

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4 Dick Summers: that was all the encouragement I needed. I finally got into the film business iท the 70s. Stanley Kubrick had amazed everybody with his beautiful film 2001: A Space Odyssey and I| found myself working on a similar film for a young guy called George Lucas. He kept talking about robots, or swords made out of light, and superfast spaceships, and I kept saying, "Sure, George, but how are we going to make it?" Well, in the end we found a way and Star Wars was a massive blockbuster. We made two more Star Wars films, and I had a great time working on the Indiana Jones movies, but then along came Jurassic Park in 1993 and that changed everything. Snesial Efecls SUPERVISOR A long time ago in a galaxy far, far away . people used to believe whatever they saw with their own eyes. But do you really believe a man can fly? Do you believe aliens are invading Earth or that an evil empire will destroy freedom across the บniverse? For the makers of films like Superman, Independence Day and Star Wars, their mission is to make you believe and that's when they come to someone like me. Over the years, I've travelled through time, breathed life back into dinosaurs and blown up entire planets. Today, I work at Industrial Light & Magic, but my interest in special effects goes back to my childho0od. I remember seeing the alien in The War Uf The Worlds zap some soldiers with a ray gun and I thought 1o myself, "| want to do that. My father had a home movie Camera and I filmed my brother pretending to be a soldier. Then filmed some fireworks exploding. My mum went crazZy When she saw it, but my dad thought it was really funny and Computer animation had been around for a long time, but now we Could make any kind of creature we wanted. Suddenly, it seemed like every film had to have CGI (computer generated imaging) and I think some people forgot that films still need imagination. I enjoy films like The Lord of the Rings trilogy because they've got drama and emotion as well as great Special effects, but my kids like computer animated films like Shrek. Sometimes I try to imagine what kind of films they'|| be watching when they're older, but then look back at how far we've already come. Who could have dreamed any of this Would really happen?

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.l TRUE-H 4G 18:01 @ 14% Fce reading and use of english part.. ปา X https://www.liveworksheets.com FCE READING AND USE OF ENGLISH PART7 You are going to read five reviews of fantasy novels. Before you read, underline the main idea in each question. The Girl Who Fell Beneath Fairyland and Led |- the Revels There by Catherynne M. Valente A Stitch in Time by Penelope Lively Maria is always lost in her own little world in which she prefers to chat with animals, trees, plants and inanimate objects, rather than other human beings. But while on holiday she begins to hear things that others cant, and she's not sure what is real any more. Then she finds a nineteenth-century sewn picture and she feels a strange connection with Harriet, the girl who sewed it. As Maria becomes more involved in This is the second breathtaking adventure for September, the strange girl who retums to Fairyland to find that the fairy creatures are in trouble, For a while now they have been losing their shadows and, with their shadow, their magic is disappearing. September learns that it is all to do with a conflict with Fairyland-Below, a dark place where there is no law, and terrifying creatures live. It is a place that September knows she has to visit in order to get back the shadows from the thieves, and to sort out the mess that Fairyland is in. It takes her on an incredible journey that is sometimes dangerous, sometimes terrifying, but always fascinating. Readers young and old will have great fun with this one. Harriet's world, she begins to fear that something sad has happened. This book is a gentile, funny and mysteriouร read from an author who started her career witing film scripts. Ante's Inferno by Griselda Heppel Shadow Spel by Caro King Adults will have heard of Dante's Inferno and the author When Nina is set the task to stop the evil Mr Strood from killing the dying land of Drift, she has to find Simeon Dark, the last surviving king and his mansion, for he is the only one who can make sure she is successful. But with Dark's love of tricks, strange creatures and monsters - good and bad - in the way, Nina has a hard mission before her. Readers watch the hero survive a series of thrilling adventures, and fall in love along the way. The book is written for the teen market, but there is nothing unsuitable for younger readers in here. In fact, the movie rights have already been sold to a family-friendly Hollywood production company, and it is due for release next year. says she was inspired to write her book drawing on the Inferno's riches. Ante and her enemy at school, Florence, plus a boy who has been trapped in the music room for a hundred years, fall into a tunnel leading to the Underworld. There they find themselves in a dark and nightmarish place where characters from Greek mythology exist alongside terifying, monstrous beings. Their horrifying journey and need to get back to the real world is full of exciting events. While it may be a bit much for pre-teens to deal with, more mature readers will keep turning the pages to find out what dreadful thing is going to happen next. Match questions 1-10 with the reviews (A-E). The reviews may be chosen more than once. 1. Which book is probably too frightening for young readers? The Deadly Trap by Jan Burchett & Sara Vogler 2. Which book is about regaining something that has been lost? Young hero Sam is taken back 300 years onto his favourite pirate ship, the Sea Wolf, where the pirates are planning to steal some English gold. Within minutes he meets the new shipmate, Mick, who Sam suspects is not all he claims to be. The other 3. Which book contains an element of humour? 4. Which book involves a journey into the past? pirates เall like him, but Sam is not 5. Which book features a character who may be hiding something?| So sure and sets 3 the others refuse to believe it, going ahead with a trap that Mick fals into but 6. Which book is being turned into a film? their piracy plans involving Mick. Sam and his close friend Charlie have to find a way to stop Mick's plan. This is a fast-moving tale, which brings to mind the old-fashioned adventure 7. Which book has a main character who is not very sociable? 8. Which book is one of a series of novels? stories of such classic writers as Stevenson and Defoe. 9. Which book takes some ideas from another work? 10. Which book includes a character interested in magic and games? Finish!! Learn German Online Group Courses Learn German with the experts online. Get afull level ahead.

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Final Test Choose the best answer for each of the following sentence. 1. Th e th ie f . p lu n d ere d th e b a n k yester d a y w a s a rr e ste d. a, w h o b, w h o m c. W h o s e d. th a t 2. Th e p o lice q uestio n e d th e m a n * ๑ ๑ * ๑ ๑ * ๑๑ ๑ ๑ ๑ .C a I w a s sto le n. a, w h o m b. w h o s e c. w h ic h d. 0 f w hic h 3. H e ga v e a prize to th e b o y ....W 0 r k w a s th e b e st. a. w h o S e b. w h ic h c. w h o d. w h o m 4. I s a w a la y . .a b lu e d ress. a. w a s w e a r in g b. sh e w a s w e arin g c. W h o W a s w e a r in g d. w h o W earin g 5. Th e co u n try fr o m .h e co m es is th e U n ite d Sta te s o f A m eric a . a. w h e r e b, th a t c. in w h ic h d. 0 f w h ic h 6. th e p e r s o n ... . . I b o rr 0 w e d th is b o 0 k h a s le ft h ere fo r F r a n ce. a, w h o m b. w h o c. w h o se d. fr 0 m w h o m Jo in th e se p air s 0 f se n te n ce s u sin g a rela tive cla u s e.