Acid Strength Grade 10- Science (chemistry) 11/23/2012 Mariana Boff Acids Strength Acids are substances that contain hydrogen atoms which detach to form hydrogen ions when the acid is dissolved. Acids are divided into two main categories: the strong and weak acids. The stronger ones are very corrosive and can cause severe skin burns‚ here are some examples: nitric acid (HNO3)‚ hydrochloric acid (HCl) and sulfuric acid (H2SO4). The weaker ones are less corrosive and when in touch with the
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Acid –Base Titration: A volume of 128 mL of 0.650 M Ba(OH)2 was required to completely neutralize 50.0 mL of nitric acid solution (HNO3). What is the concentration of the acid solution? Gravimetric Titration: Calculate the molar concentration of Ba2+ ions in a 500.0 mL sample of an unknown aqueous solution if 2.47 g BaSO4 is formed upon the addition of excess Na2SO4? Stoichiometry of Acid –Base Reactions: What volume of 0.800 M HCl is required to completely neutralize 35.0 g of Ca(OH)2
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In the ANE‚ numerous tablet inscriptions and references exist‚ the oldest dating to ancient Babylon. Unfortunately‚ these references are general to an inscribed message. Authoritative references to tablets are less‚ and references to named tablets referred are rare. Research uncovered only five such tablets: the Covenant Tablet‚ the Tablet of Destinies‚ the Tablets with the Words of Fate‚ the Holy Tablet of the Heavenly Stars‚ and the Tablet of Wisdom. The first two tablet concepts graded highest
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Laptops vs. Tablets By: Harley Picard 01/27/2013 There is a debate as to whether or not tablets are better than laptops. This is something that really has interested me. In this essay we will compare the differences between three tablets and three laptops to see if we can determine whether tablets are better than laptops or vise versa. Even though tablets are more portable‚ laptops are better than tablets are because of their better capabilities and size of the laptop. In this paragraph/section
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Tablet Computers in Education Dr.R.Sivakumar Assistant Professor Education Wing -DDE Annamalai University Annamalai Nagar rsk_edutech@yahoo.co.in Abstract Tablet Computers are quickly emerging as a powerful Learning tool in higher education. The unique functionality of the Tablet Computer allows teachers to create lecture materials for their classes using digital format that can be distributed to students for later review. A tablet enhanced learning environment is an environment where
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Ammonia and Hydrochloric Acid Lab Chemistry 1 Abstract The straw should be cut shorter to 8 cm in order to make the solid ring appear in the center of the straw. We achieved our goal‚ cutting the straw caused the gases to not have to go as far‚ and meet in the middle. Background The particles in a gas are very loose and tend to move around a lot very quickly. The particles in a solid are very compact and vibrate but don’t really move very much. The particles in a liquid however are more
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Tablets vs. Textbooks During the 21st century‚ humans have developed the scientific technologies more rapidly than ever before. And the way of their lives is also changing according to the change of new technologies. Nowadays‚ we can easily see the people who are holding tablets with their hands around our place. A tablet is simply a mobile computer that is small‚ portable‚ and easy to use with just two fingers. Since it has been recognized for its usefulness and utility‚ many students study and
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Textbooks will soon be replaced by notebook computers and tablets. Agree or disagree? With the advancement in technology‚ life has become much more convenient. These improvements in the living standards are brought about by the use of computers. In the 21st century the world has come across many innovative gadgets like tablets‚ notebook computers‚ and kindles etc. which are being used for educational purposes. Many discussions have taken place lately as to judge whether books will be replaced
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Introduction In quantitative chemical analysis‚ acid - base reactions are often used to provide a basis for various titration techniques. The equivalence points of acid - base titrations can be estimated from the colour change of chemical indicators‚ such as phenolphthalein‚ methyl red‚ methyl orange and so on. The choice of an indicator suitable for a particular titration requires a detailed knowledge of the chemical properties of the acid and base. This difficulty can be avoided by using physical
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Replacing Textbooks With Tablets Why should schools replace textbooks with tablets? More students will turn in homework‚ less students will have back pains from carrying to many books in book bags‚ school wouldn’t have to spend to much money on textbooks every year. By replacing textbooks with tablets more students will turn in homework on time. They could email homework to teachers or teachers could email the students work of what they miss that day. Students also wouldn’t have the excuse of
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