Calculations 1. Rounding Examples *0.1356 (4 significant figures) -> Round answer to 2 significant figures *0.1356 -> 0.14 *314.705 (6 significant figures) -> Round number to 4 significant figures. *314.705 -> 314.7 *0.0035771 (5 significant figures) -> Round to 3 significant figures. *0.0035771 -> 0.00358 *500‚000 (1 significant figure) -> Write this number to have 3 significant figures. *500‚000 - 5.00 x 10^5 *39.501 -> Round to 2 significant figures. *39‚501
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of the Upper Nepean Catchment. The following is a summary of factors that affect water quality. Water may contain several ions‚ namely anions and cations which are toxic to humans. Hardness is the scum on water surface from significant concentrations of calcium and magnesium ions. Total dissolved solids is the measure of dissolved solids that are ionic in water. Turbidity is the presence of suspended solids in water which reduces penetration of light‚ resulting in a decrease concentration of
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CHE 242 Tutorial 3: Problems & Answers Week 4: Feb 2- 6‚ 2009 1. Consider a gas that occupies 1.00 dm3 at a pressure of 2.00 bar. If the gas is compressed isothermally at constant external pressure‚ Pext‚ so that the final volume is 0.500 dm3‚ what is the smallest value Pext can have? Calculate the work involved using this value of Pext. Solution For compression to occur‚ the value of Pext must be at least as large as the final pressure of the gas. P1 = 2.00 bar‚ V1 = 1.00 dm3‚ V2 = 0.500
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~Fulfilling ethical values and islamic virtues~ * Ethics known as moral philosophy‚define ethics as "a set of concepts and principles that guide us in determining what behavior helps or harms sentient creatures. * Virtue is moral excellence. A virtue is a positive trait or quality deemed to be morally good and thus is valued as a foundation of principle and good moral being. Personal virtues are characteristics valued as promoting collective and individual greatness. This has been mention
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Baking Project There are several chemical reactions taking place in the general baking of cakes. Every ingredient has its own function and causes a different reaction Synthesis: * Egg yolks (modify molecule’s structure) helps the oil-based and water-based components of the cake mix together. When eggs are cooked‚ the protein molecules become uncurled when exposed to heat and create new molecular bonds with other nearby protein molecules. When the egg is completely cooked‚ it helps form a
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William ‘Bill’ Shakespeare’s The Tragedy of Hamlet‚ King of Denmark‚ a turn of the 16th century revenge tragedy play‚ is today still a relevant and delving tale‚ that stands as Bill’s reconceptualization of the genre. The genre was popular at the time of Hamlet’s creation‚ and thereby retains traditional elements of a revenge tragedy. However‚ and after adding many dramatic elements‚ a flicker of an Oedipus complex‚ and a touch of humor‚ Bill analyses and explores the revenge tragedy on a more complex
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A. Role of Chemistry in Society Applications of chemical science have contributed significantly to the advancement of human civilization (1‚ 2‚ 3). With a growing understanding and ability to manipulate chemical molecules‚ the post-World War II chemist was considered a societal problem solver. They synthesized crop-enhancing agricultural chemicals to ensure a constant and viable food supply. They played a significant role in the eradication of deadly diseases by developing life-saving pharmaceuticals
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Waylon Dude ENG 099/100 Fast Food: Problem in America? Imagine you’re at McDonald’s and you’re going in for that bite on your burger. First thing you think about is the tastiness of the burger and not exactly what you’re eating. Little do you know that you’re eating so much stuff that will actually take a toll on your body in the long run? Most Americans do not have this thought running through their minds because all they care about is the explosion of flavor in their mouth and the satisfaction
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JUNK FOOD – OPINION ESSAY- For the last thirty years‚ junk food has been part of our daily life. Whenever we are hungry‚ we want to celebrate‚ or have a quick easy meal‚ we resort to fast food. In this way‚ pizza‚ hamburgers‚ carbonated beverages (sodas)‚ fried chicken‚ among others‚ have replaced the nutritious foods in our diet. But this is not the healthy way to nourish ourselves. In my opinion‚ junk food is certainly not the healthier option when we have to choose what to include in our diet
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Question: What Is the Importance of Chemistry? What is the importance of chemistry? Why would you want to learn about chemistry? Chemistry is the study of matter and its interactions with other matter and energy. Here’s a look at the importance of chemistry and why you should study it. Answer: Chemistry has a reputation for being a complicated and boring science‚ but for the most part‚ that reputation is undeserved. Fireworks and explosions are based on chemistry‚ so it’s definitely not a boring science
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