acid (HCl) on the rate of reaction (mol dm-3 s-1) for the following chemical reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Research question: How does altering concentration (mol dm-3) of hydrochloric acid (HCl) affect the rate of reaction (g/s) for the following reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Background information: The reaction between calcium carbonate and hydrochloric acid is an example of a neutralization reaction between an acid and a base. Neutralization
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lack of job opening in our society. Even those who are fresh graduates in college are hard to get job‚ mostly those graduated in college are jobless and they are vacant only in their house. This is the reason why Philippines tackles unemployment rate in economic crisis. Once‚ there are job openings that need many options and requirements‚ so other people are not qualified of it and they may experience hard getting a job. Also‚ because of unemployment crisis here in Philippines‚ mostly Filipino
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primary and secondary data. However‚ for the primary data the questionnaire was used to solicit responses from the respondents. In conclusion economic recession‚ governmental policy‚ employment of expatriates and trade union wage demand increase the rate of unemployment. The study emphasis that planning for human resources use in Nigeria has been based on guesswork and needs reevaluation. Keywords: Unemployment‚ Human resource planning‚ Graduates‚ Economy. 142 British Journal of Arts and Social
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temperature)‚ and 70°C. This investigation tested the hypothesis: The rate of osmosis will increase as the temperature increases 2x2x2cm cubes of potato were weighed and then placed into 100mL of 10% NaCl solutions for 10 minutes. After 10 minutes the cubes were again weighed to determine the amount of mass that they lost/gained and thus get an indication of the rate of osmosis. The results collected showed that the rate of osmosis was highest in the 70°C solution and lowest in the 20°C solution
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Chapter 5: Flow Rate and Capacity Analysis 5.1 Objective Chapter 3 introduced the three basic building blocks of process flow namely the (average) flow time‚ (average) flow rate and (average) inventory. It is followed by a sequence of three chapters‚ 4‚ 5 and 6‚ which examine each one of these measures individually. Chapter 5 is concerned with flow rate analysis and issues of capacity. The major managerial concept discussed in the in the chapter is that of the bottleneck. We use the notion
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RATE OF REACTIONS. The reaction rate (rate of reaction) or speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow a reaction takes place. For example‚ the oxidative rusting of iron under the atmosphere is a slow reaction that can take many years‚ but the combustion of cellulose in a fire is a reaction that takes place in fractions of a second (right). Chemical kinetics is the part of physical chemistry that studies reaction rates. The concepts
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Kinetics 6.1 Rates of reaction 6.2 Collision theory 6 16.1 Rate Expression (AHL) 16.2 Reaction mechanism (AHL) 16.3 Activation energy (AHL) 6.1 Rates of reaction 6.1.1 Define the term rate of reaction. 6.1.2 Describe suitable experimental procedures for measuring rates of reactions. 6.1.3 Analyse data from rate experiments. © IBO 2007 Figure 601 An explosion is a quick reaction D ifferent chemical reactions occur at different rates (i.e. speeds). Some
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at the instant that the radius is 4 cm. The radius is decreasing at the rate of 0 .25 cm/min. What is the rate of change of the volume at this instant? FACT IDEA LEARNING ISSUE ACTION PLAN 1) Snowball is melting that at the instant. 2) The snowball radius is 4cm. 3) The radius is decreasing at the rate of 0 .25 cm/min. 1) Make equation using chain rule. Chain rule based on the information given. 1) What is the rate of change of the volume at this instant? 2) How to solve the problem?
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Unemployment Rate by Race/Ethnicity Marcel Palomo ECON 201 17 MAR 13 Professor Mills Unemployment Rate by Race/Ethnicity There has always been a difference between unemployment rate from the four major ethnic groups which are White‚ Black or African‚ Hispanic or Latino‚ and Asian My paper will examine why there is such diversity in amongst these groups. People of Asian descent have the lowest unemployment rates compared to the other four groups‚ while unemployment among Hispanics
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The purpose of this practical is to investigate how the pulse rate of humans changes when they exercise. Someone who is physically fit can supply their muscles with enough blood‚ carrying glucose and oxygen‚ for an activity at a lower heart and breathing rate. The fitter you are the lower your resting heart rate. You and your classmates will be the humans investigated. SAFETY: If you know you have any condition that affects you doing exercise‚ please make sure your teacher knows before you start
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