How To Calculate Experimental Error in Chemistry

Error is a measure of accuracy of the values in your experiment. It is important to be able to calculate experimental error, but there is more than one way to calculate and express it. Here are the most common ways to calculate experimental error: Error Formula In general, error is the difference between an accepted or theoretical value and an experimental value. Error Experimental Value - Known Value Relative Error Formula Relative Error Error / Known Value Percent Error  Formula % Error Relative Error x 100% Example Error Calculations Lets say a researcher measures the mass of a sample to be 5.51 grams. The actual mass of the sample is known to be 5.80 grams. Calculate the error of the measurement. Experimental Value 5.51 gramsKnown Value 5.80 grams Error Experimental Value - Known ValueError 5.51 g - 5.80 gramsError - 0.29 grams Relative Error Error / Known ValueRelative Error - 0.29 g / 5.80 gramsRelative Error - 0.050 % Error Relative Error x 100%% Error - 0.050 x 100%% Error - 5.0%

The Impact of Humans on the Biological Diversity of...

The Impact of Humans on the Biological Diversity of Natural Ecosystems Introduction Since humans have come into existence they have always been a cause of change of whatever natural areas they inhabit along with the living organisms of those natural areas. The different types of organisms such as plants, animals, and microorganisms that inhabit these areas are known as biological diversity or biodiversity. (USEPA 2010 ) Biological diversity can be affected by many different things, climate change, and area being two specific things. Humans fit into a strange niche of biological diversity. While we have a part of biodiversity and in ecosystems, the human race has spread much farther than any other breed or type of organism except for†¦show more content†¦Eventually all rivers lead and empty out into oceans which means said chemicals are dumped into the ocean. These chemicals, waste, and debris float freely into the human population water supply and into the animals of aquatic systems water supply and habitats. These animals are exposed to the companies†™ byproducts and they affect the life span, and habitat quality of the animals. Yet again human population growth can cause extinction of species, populations, communities, etc. due to the lack of regard or concern of how the biodiversity of natural ecosystems affects all species in the long run. White 4 Landscape Conservation Though humans have made a huge impact on the biodiversity of many and most ecosystems; it is recognized that for as much damage has been caused there should be some type of effort to improve and try to restore the biodiversity in some ecosystems. So was created the National Landscape Conservation System in 1969 ( CSA 2009). The mission of this system is to â€Å"conserve, protect, and restore these nationally significant landscapes that have outstanding cultural, ecological, and scientific values for the benefit of current and future generations†. (CSA 2009 ) However this system of land conservation is solely interested can only benefit Western/American land. The goal is to protect the USA’s most prized beautiful lands from being lost to theShow MoreRelatedImpact Of Biodiversity On The Environment1267 Words   |  6 Pagesspecies were being lost at rapid rates from ecosystems. It is known that all organisms play important roles within their ecosystems being that organ isms interact with their ecosystem through feedback mechanisms (Cardinale, B. J., et al., 2012). If biodiversity is diminishing then food webs and ecosystems will also be disrupted. In humanity, Health cannot be sustained without a viable environment (Yassi, A., 2001). The primary cause of biodiversity loss is human activity. Any type of anthropogenic actionRead MoreBiodiversity. Biodiversity Is The Variability Among Living1684 Words   |  7 Pagesmarine and other aquatic ecosystems. This includes diversity within species, between species, and ecosystems. The three main aspects of biodiversity include genetic diversity, species diversity, and ecosystem diversity. Biodiversity levels can change over time due to long-term natural processes including habitat loss. The importance of biodiversity is vital to all life on earth, determining extinction, evolution, and the fate of our planet’s ecosystems. Genetic diversity is the key ingredient fromRead MoreEconomics to Biodiversity989 Words   |  4 Pagesentire educational process. ii. Economics of Biodiversity A main point which comes out as a difficulty is that ecosystem services are mixed public goods and therefore their regulation cannot be properly done even if they are at the point of depletion. With all the awareness and importance of the increasing need for biodiversity conservation and ecosystems use to the human welfare, degradation of biodiversity is still a huge problem which needs to be solved yet and hence fundamental changesRead MoreThe Importance of Biodiversity1521 Words   |  7 PagesConvention on Biological Diversity (CBD) from the 1992 Earth summit: ‘Biodiversity is the variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are part ; this includes diversity within species, between species and of ecosystems’ (Hambler, C., 2004, 11). Within planet earth today Biodiversity forms the foundation for the vast array of ecosystem services that critically contribute to human well beingRead MoreThe Importance Of Diversity Within Crops And Their Microbial Symbionts1260 Words   |  6 Pagesreflect food production systems that not only require constant human intervention, but also lack internal regulation. To address these economic and environmental issues, one key strategy would be to enhance the biodiversity in agroecosystems in order to model the homeostasis present in natural ecosystems. By understanding the importance of diversity within crops and their microbial symbionts, agroecosystems can benefit from a variety of natural services including nutrient cycling, soil fertility, and enhancedRead MoreImpact Of Biodiversity On The Environment1323 Words   |  6 Pages Furthermore, it is a proven fact that biodiversity changes influence â€Å"the flow of ecosystem services†, i.e. benefits that people receive from ecosystems, including such services as provisioning, cultural, and regulating ones (Perrings 1). The most acute group of services in terms of biodiversity connection with the environment concerns regulating services, which relate to control of biological variability, presence of pathogens and pests, emergence and mitigation of environmental hazards, as wellRead MoreFreshwater Is A Vital Necessity Of Life Essay1372 Words   |  6 Pagestheir exploitation as freshwater sources, few rivers can be found in their natural conditions due to pollution (Ngoye and Machina, 2004). Rivers form parts of aquatic ecosystems which provide ecosystem services that utilized mostly by humans and other organisms. The ecosystem services that are provided for by aquatic ecosystems that are utilized by humans include agricultural food crops, recreational purposes, biological control and management of insects and weeds (FAO, 2003). It is estimated thatRead MoreMarine Biodiversity : A Global Pattern Essay1461 Words   |  6 PagesAccording to the definition of the Convention on Biological Diversity, biodiversity is the variability among living organisms from all sources, including inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems. Why Marine Biodiversity Is a global pattern: Biodiversity is essential for the benefits the ecosystems can provide to humans. Biodiversity effects a larger number ofRead MoreIntroduction Knowledge has always been transferred from older generation to younger generations700 Words   |  3 Pagessources laying down the importance of the traditional knowledge, as pre-scientific traditional systems of management have been the main means by which the traditional societies have managed natural resources for millennia . Thus biodiversity conservation holds primary importance for sustainable use of the natural resources especially at a time which when the common resources which should be judiciously exploited are being exploited in arbitrary manner. The Role of Traditional Knowledge in BidoversityRead MoreApes Chapter 3 Questions1225 Words   |  5 Pagesmost forms of life. 9. Explain the following terms: abiotic, biotic, range of tolerance. Abiotic consists of non-living components such as water, air, nutrients, and solar energy. Biotic consists of biological components such as producers, consumers, and decomposers. Each population in an ecosystem has a range of tolerance to variations in its physical and chemical environment. 10. Explain how limiting factors can control population size. Too much or too little of any abiotic factor can limit

What is popular culture Essay Summary Example For Students

What is popular culture? Essay Summary Deconstructionist writers like Derrida and De Sassure focus on theories that fragment metanarratives or truth. Their focus is on plurality of knowledge by way of multiple interpretations of signs like those in mass media and consumer culture (Beaudrillard, 1988). In this way, it is no longer possible to utilise one narrative, as signs in consumer culture are pastiched and can provide plural meanings rather than contradictory ones. While for Baudrillard and Lyotard, plurality is the demise of the authentic and therefore the end of modernity, Kumar, describes the extension of modernity in saying the combination of many traditions to form a new, rather than rejection of the old tradition. (Kumar,1995,105) Kumar explains that it is not clear that postmodernity has begun, nor that modernity is clearly over. Rather than it being a clearly demarcated phase, it is described as unevenly loose process that is clearly happening where There is simply a more or less random directionless flux across all sections of society. (Kumar, 1995, 103). He perceives these changes to be consistent with postmodernism but realizes there is no guiding principle for the change as for example in Marxist theory and capitalism. Other key writers advocating for the relevance of modernism, are Smart, Lash Ury, Crook and Habermas. Crook (1992) critiques Habermas by arguing that we are in an advanced state of modernism or known as late modernism rather than postmodernism. He argues that if capitalism is associated with modernism, then advanced rationalisation and comodification can only mean we are in a high level of modernism. Crook prefers to sit more on the fence and although advises against nostalgia for modernism he explains it is too early to predict the postmodern condition but also premature to say modernism is over (Crook et al, 1992). Meta narratives like progress and rationality are still sought as the final end. To conclude this briefing, an understanding of postmodernism in the absence of a clearly guided definition has been provided. Potmodernism referred to the breakdown of modernity or at least the transformation of modernity. This briefing discussed that where modernism meant the embracing of universal truths like progress, reason and rationality, postmodernism could be seen in two ways; abandonment of the modern for the pursuit of a different approach or the extension of modernity. Under this scenario, I discussed the blurring of different knowledge. The question remains to be clarified as to whether western society is in a modern or postmodern reality. Given the Bush administrations post September 11 warfare, the pursuit for truth like freedom and liberty has widened the gap between modern and postmodern thinking at a global level and polarized those who believe in universal truths and those that do not.

The History of the Nazis free essay sample

This paper discusses the Nazis regimes rise to power and its political activities. This paper takes the reader into an exploratory journey through the rise of the Nazis from 1918-1939. The author discusses Adolf Hitlers rise to power, the partys political agenda and its expansion nationwide. Furthermore, it urges the reader to remember the evil the Nazis caused humanity in order to prevent history from repeating itself. In 1939 the war of the world included the United States anger and coupled with allies the Nazis were finally defeated. The rise and fall of the Nazis is something that we must never forget. A man with a charismatic speaking ability, and a nation with economic troubles was all it took to grow one of the biggest monsters in the history of the world. The Nazi regime still lives. It is in corners, and web sites and meetings that are around the world. We will write a custom essay sample on The History of the Nazis or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page We must never let them grow, and we must never let them win again.