observe how heat is released or absorbed with different chemicals. Data Table 1 – HCI and NaOH Trial 1 Trial 2 Avg Volume 1.0 M HCI(ml) 25 25 - Volume1.0 M NaOH (ml) 25 25 - Ti of HCI before mixing 20 20 - Ti of NaOH before mixing( 20 20 - Average Ti before mixing( 20 20 - Tf of mixture ) 26 26 - T ) 6 6 - Specific Heat (J/g) 4.184 4.184 - Heat‚ q (J) 1255.2 1255.2 1255.2 Data Table 2- NH4 NO3 and H20 Trial 1 Trial 2 Avg Mass of NH4 NO3 (g) 12
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PERIODIC TABLE PERIODIC TABLE Charles Janet developed the periodic table in 1928. How the periodic table is organized: Charles Janet’s periodic table was organized according all elements that had been discovering before 1928 according to the orbital filling. It also structures the electrons in ascending atomic order Describe the information the periodic table contains: DISADVANTAGE: * The periodic table has a rough tarnation from metal to none-metal. DISADVANTAGE: * The periodic
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devised an early form of periodic table‚ which he called the telluric helix. | John Newlands | Classified the 56 elements that had been discovered at the time into eleven groups which were based on similar physical properties. He also noted that many pairs of similar elements existed which differed by some multiple of eight in mass number‚ and was the first person to assign them an atomic number. | Dmitri Mendeleev | The first scientist to make a periodic table much like the one we use today.
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classification of elements) 1. 2. Which of the following has maximum atomic size? (a) K (b) Ca (c) Al (d) P The law of octaves was proposed by (a) Newland (b) Doberiener (c) Lother Meyer (d) Mendleeve The number of periods in the long form of the periodic table is (a) 6 (b) 7 (c) 10 (d) 18 Which of the following elements has maximum metallic character? (a) Li (b) N (c) Na (d) P Which of the following is the most reactive halogen? (a) F (b) Cl (c) Br (d) I Why do elements in a group show same valency? Why
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Sha’Quan Johnson Oral Communication I. Culture Manner Conflict A. Specific Purpose: To inform the class on the conflict we face between Culture and Manners. B. Thesis Statement: Over time‚ the manners of American culture have diverted to fit the fast pace of today’s society‚ as in-home value continues to decrease in importance. C. Attention Grabber: The value of family‚ at a time‚ was the cornerstone of how a man or woman carried themselves in the public eye. D. Clearly Reveal
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Scandium is an element on the periodic table. Its atomic number is 21. Its atomic symbol is Sc. It has a silvery white color. It is classified as a metallic. Its group on the periodic table is 3. Its atomic mass is 45. Its melting point is 1541 Celsius. Its boiling point is 2836 Celsius. Its atomic is 216 pm. These a really interesting element. Scandium was discovered in Scandinavia in 1878. It was discovered by a man named Nilson. There is two metals that scandium has that were only found in Scandinavia
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works with‚ Oren also wants to track information about their products. He asks you to create a new table in the Supplier database by completing the following steps: 1. Open the Supplier database‚ which you created and stored in the Access1\Review folder in Tutorial 1. 2. Open the Company table in Design view‚ and set the field properties as shown in Figure 2-43. 3. Save and close the Company table. Click the Yes button when a message appears indicating some data might be lost. Switch to Datasheet
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Electrons Have you ever wondered exactly how the elements on the periodic table are organized‚ what the groups on the periodic table mean‚ and how electrons work in an atom‚ compound‚ and chemical bond? The way elements are organized on a periodic table has to do with the characteristics that they hold. There are groups‚ periods‚ compound formation and color coordination in a periodic table. The periodic table is organized in many ways. As stated by Chem4kids.com‚ "Each element is placed
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Request for PCs using MS Word Table‚ MS Access‚ and MS PowerPoint Case Study – Using MS Office 2010 Please use the document “Case Study – Director’s Requirements” for each of the parts described below. Part 1: Specifications Table (MS Word) For the case study provided to you‚ create MS Word tables that identify and contain the hardware and software requirements to meet the director’s requirements. The MS Word document in its final form will include 5 MS Word tables. It will conclude with
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I am reading No Easy Way Out by Dayna Lorentz. I have read pages 150-341 this week. The prompt I have chosen this week is “How a character’s traits affect the story.” A way Marco’s traits affect the story is how Marco is clever. Marco has a big reputation of being a street-smart person‚ and it definitely showed throughout the entire book. From using a baby monitor to spy on government officials‚ and to being the first citizen to escape the mall during the disease crisis‚ Marco is no amateur in having
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