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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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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The Abuse of Welfare Welfare was established by the Social Security Act of 1935 to help poverty toward children and other dependent people in need of assistance. Money paid by the government to those who are in need of financial assistance‚ or who are just unable to work because of physical or health reasons. This program helped many people in the Great Depression and still helps families to survive today. The program was invented to help families reenter society‚ and not for people to entirely
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In Genesis 12‚ God made three promises to Abraham. The first promise was land for his people and himself‚ free of conflict and safety in pursuing their faith (Israel). Throughout the history of Judaism‚ there were those who opposed it and its disciples. The promise of a holy land would ensure Abraham and his family would not be pursued for obeying Him‚ as God had said (Genesis 12:1). To ensure this promise‚ however‚ Abraham and his wife would have to leave their current standings behind‚ as well
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MAPÚA-CWTS ON-LINE LEARNING EXERCISE REPORT FORM [OLLERF] DATE SUBMITTED: COURSE / SECTION: NAME OF THE STUDENT ON-LINE ACTIVITY TITLE: Relevant Societal Concerns DISCUSSION Climate Change: The Uprising Phenomenon Climate Change is an occurrence wherein there is a change in weather; more specifically‚ it is the distribution of weather events in a specific region or in the entirety of earth in a period of time. There is such‚ referring to climate change‚ mainly because of the amount of energy
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Ideologies of Welfare For hundreds of years the health and general wellbeing of people and their families have suffered due to the difficulties that social policy and welfare provision has been continuously faced with as a result of the persistence of poverty. This essay will explain and discuss the ideologies of the major political parties‚ how they have influenced the development of welfare and the effects they have had on social policies and social care provisions. It will explain how these ideologies
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Atmospheric chemistry is a branch of atmospheric science in which the chemistry of the Earth’s atmosphere and that of other planets is studied. Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It can be defined as the study of the sources‚ reactions‚ transport‚ effects‚ and fates of chemical species in the air‚ soil‚ and water environments; and the effect of human activity on these. Environmental chemistry is an interdisciplinary
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Chapter 4 - Chemical Bonding Outline • 4.2 Naming Compounds and Writing Formulas • 4.1 Types of Chemical Bonds • 4.4 Electronegativity‚ Unequal Sharing‚ and Polar Bonds • 4.5 Vibrating Bonds and the Greenhouse Effect • 4.3 Lewis Structures • 4.6 Resonance • 4.7 Formal Charge: Choosing among Lewis Structures • 4.8 Exceptions to the Octet Rule • 4.9 The Lengths and Strengths of Covalent Bonds © 2014 W. W. Norton Co.‚ Inc. 1 Chemical Bonds All chemical bonds consist of _______ that
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