Determination of Ascorbic Acid in Vitamin C Tablets Done by: lora ID #: Date:12/3/2011 Objectives: The aim of this experiment is to determine the weight of ascorbic acid in three vitamin C tablets by titrating it directly with KBrO3‚ then back titration by Na2S2O3. Introduction: Vitamin C is a weak acid and a water soluble substance and it is often called ascorbic acid. It is useful for many biological activities and main functions such as: it is used to provide reducing equivalents for biochemical
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world are affected by natural disasters. These may be caused by climate change such as drought‚ flood‚ and cyclone‚ the environment such as pollution‚ deforestation‚ desertification‚ pest infestation or combinations of these‚ or the destroy of ozone layer will contribute to the green house effect. People’s homes are wiped out and livelihoods are destroyed. Poverty‚ population pressures and environmental degradation mean that increasing numbers of people are vulnerable to natural disasters. In Australia
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Natural Devastation The largest earthquake in 40 years shifted huge geological plates beneath the Indian Ocean on Dec. 26‚ 2004‚ causing a immense and abrupt displacement of millions of tons of water. Indonesia villages closest to the epicenter were swamped within minutes‚ while elsewhere the waves radiated outward‚ making landfall at speeds topping 500 mph (www.cbsnews.com). The phenomenon we call tsunami is a series of large waves of extremely long wavelength and period usually generated by
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The natural environmental problem is the one of the most important problem to impact our world. Some problems are very famous like “global warming” and “Marine pollution”. We usually the government determine to spend millions or billions dollars to curb environmental pollution from news. In fact‚ we can save the money because we always curb environmental pollution after we did it. The natural environmental problem was already permeated our life. We almost can find it everywhere. For example‚ in
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A natural disaster is the effect of a natural hazard (e.g.‚ flood‚ tornado‚ hurricane‚ volcanic eruption‚ earthquake‚ heatwave‚ or landslide). It leads to financial‚ environmental or human losses. The resulting loss depends on the vulnerability of the affected population to resist the hazard‚ also called their resilience. if these disasters continues it would be a great danger for the earth.[1] This understanding is concentrated in the formulation: "disasters occur when hazards meet vulnerability
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Spring 2011 Introduction to C - Programming Assignment #5 Due date: Please consult WebCourses for your section Objectives 1. Learn how to design a program using functions. 2. Review of if statements and loops. Note: In this assignment‚ you are required to write one program. Problem: Universally Comical Funland Unified (ucf.c) Your internship with UCF has gone quite well so far. You’ve helped design software for many different areas of the park ranging from the roller coasters to the
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of the germline‚ called germ cells. These "parent" cells of sperm and egg cells have the ability to become any cell type of each subsequent generation‚ and are thereby totipotent. This totipotency essentially makes germ cells immortal and comes in part from special cellular components called germ granules. Germ granules are small masses of proteins and RNA that are found just outside the nucleus of germ cells (Updike and Strome‚ 2010). It is thought that these germ granules influence the totipotency
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Will Godfrey Chemistry Miss. Morrison May 21‚ 2000 Natural Indicators Each year millions of tourists travel to the woods of New England‚ upstate New York‚ Wisconsin‚ and Canada to witness the appearance of brilliant autumn colors. Sugar maples‚ red oaks‚ sumac‚ birch and other trees and shrubs turn from green to bright red‚ orange‚ and yellow. The short‚ cool days of autumn bring an end to the production of chlorophyll (the green light-gathering pigment). As chlorophyll gradually breaks
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How Natural Science And Arts Made Progress Philosophy Essay Everyday in our life‚ we will learn something new either we realize or not. We gain the knowledge through our own experiences as well as other people’s experiences. From those experiences‚ we learn which are right or wrong. When we get the knowledge‚ how can we recognise when we have made progress in the search for knowledge? This essay will be discussed two areas of knowledge‚ Arts and Natural Science. This essay will discuss how Natural
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88‚ d = 11. (b) a = −29‚ d = 9 (c) a = 58237‚ d = 58168 (actual question is a = 58237‚ d = 58168 ) Solution: (a) Because 88 = 11・8 + 0‚ we have q = 8‚ r = 0. (The fact that r = 0 says that 11|88.) (b) Because −29 = 9・(−4) + 7‚ we have q = −4 and r = 7. (Note that although we can write −29 =9・(−3) + (−2)‚ we cannot use −2 as r because r is not allowed to be negative.) (c) a = d(q)+r 58237 = 58168(1) + 69 Quotient = 1‚ Remainder = 69 (c actual) We do not need to perform
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