Any strong acid will release approximately - 57 kJ/mol of energy on neutralisation with strong base. This energy release is due to the formation of water molecules from the H+ ions from the acid reacting with the OH- ions from the base. H+(aq) + OH-(aq) H2O(l) When a weak acid is neutralised some of the energy is needed to dissociate the molecules to make the hydrogen ions available for neutralisation. The result is a value for neutralisation enthalpy lower than - 57 kJ/mol (numerically
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The rate of a chemical reaction is the measure of change in concentration of the reactants of the change in concentration of the products per time. The rate of a chemical reaction is influenced by the concentration of the reactants‚ temperature‚ and the presence or absence of a catalyst. Through finding the time and concentrations of the reactants‚ it is possible to find the rate of reaction and k. To perform this experiment‚ you need two erlenmeyer flasks‚a timer‚ a LabQuest with a temperature
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Accounting rate of return The accounting rate of return (ARR) is a way of comparing the profits you expect to make from an investment to the amount you need to invest. The ARR is normally calculated as the average annual profit you expect over the life of an investment project‚ compared with the average amount of capital invested. For example‚ if a project requires an average investment of £100‚000 and is expected to produce an average annual profit of £15‚000‚ the ARR would be 15 per cent. The
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Since 2009‚ our unemployment rate has been steadily dropping. The Great Recession from 2007 to 2009 had a significant impact on the economy spiking the unemployment rate of the United States at a shocking ten percent. Thankfully‚ under the governing of President Obama we have managed to reduce that rate to under five percent. Nelson D. Schwartz at the New York Times suggested that the decrease has necessitated employers to increase their wages to entice new employees and retain current ones‚ but
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PTV Home Tariff Prime time spot rates and sponsorship charges (7:45 PM to 9:00 PM) Spot Rates Duration Of Spot Karachi Center Lahore Center Islamabad center Peshawar Center Quetta Center 07::seconds 3‚065 2‚945 2‚365 615 370 15::seconds 5‚905 5‚685 4‚570 1‚170 680 30::seconds 10‚495 10‚095 8‚100 2‚075 1‚170 60::seconds 15‚745 15‚140 12‚150 3‚120 1‚755 Prime Time Sponsorship Charges (7:45 PM to 9:00 PM) Rs.178‚150 per minute. Non-Prime Time Sponsorship charges Time Slots Tariff 06:00 AM to 05:00
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Why is the Divorce Rate So High? Intro to Sociology April 25‚ 2006 A question that has been plaguing sociologists for years is the issue of high divorce rates. Since the 80’s there has been an extremely high rate of divorce in our country. In statistics I found from 2004 the percentage of divorce was at 47(NCHS). This question has been studied vigorously‚ sociologist have looked in every direction for one solid reason that our divorce rate is so high‚ even compared to other developed countries
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turnout. The reported turnout (Voting-age Population or VAP) is the result of the population who are aged 18 and older. This turnout rate includes people that are ineligible to vote which include felons and non-citizens. The more accurate measure of voter turnout is the Voting-eligible population (VEP). This turnout rate subtracts the ineligible population. The VEP turnout rate is normally higher than that of the VAP. The United States is the world’s most powerful country but the voter
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Kong‚ some people have suggested that the Linked Exchange Rate system is the root cause of the situation and that the Hong Kong dollar should no longer be linked to the US dollar. The Financial Secretary already stated in his blog on 14 August that the Link continues to be the most appropriate exchange rate arrangement for Hong Kong. I will elaborate further on a few related issues. Many people who advocate un-pegging the Hong Kong dollar from the US dollar claim that the recent downgrade of the sovereign
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season? There’s a considerable measure of clashing data out there about how to get in shape quick‚ however by taking after these essential tips you can securely lose the weight you.to burn your fat quickly first you have to Figure your Basal Metabolic Rate (BMR). Your BMR is the measure of vitality that your body uses every day on the off chance that you were very still throughout the day. Raising your BMR will build the measure of calories you blaze‚ which will prompt weight reduction. To compute
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Understand Child and Young Person Development Understand the expected pattern of development for children and young people from birth – 19 years Each child and young person will follow an expected pattern of development‚ focusing mainly the skills they are learning rather than the physical growth. Although when discussed the development of children it focuses on the skills it is undeniable that both skills and growth of children and young people are linked and will impact on the development on
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