Aim: To determine the effect of altering concentration (mol dm-3) of hydrochloric 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
Premium Chemical reaction Carbon dioxide Reaction rate
American Obesity Rises The obesity rate in America has increased tremendously within the past 20 plus years. People have become more comfortable being heavier than the average. Society tries to enforce the idea of “slim” being “in”‚ while somehow contradicting itself by saying being comfortable in your own skin. The obesity rate in America has increased because of cultural changes‚ lifestyle habits‚ and genetics. Over the past 20 years‚ American culture has changed as a whole. Working men and
Free Obesity Nutrition
semi-annually. If your required rate of return is 10%‚ what is the value of the bond? How would your answer change if the interest were paid annually? 7) Sharp Co. bonds are selling in the market for $1‚045. These 15 year bonds pay 7% interest annually on a $1‚000 par value. If they are purchased at the market price‚ what is the expected rate of return? 8) You own a bond that pays $100 in annual interest‚ with a $1‚000 par value. It matures in 15 years. Your required rate of return is 10 percent.
Premium Stock Investment Weighted average cost of capital
Economics of crime A Report on the Economics of Crime in the UK Economics of Social Policy 1/26/2011 18006583 Raza Waheed Contents Executive Summary 3 Introduction 3 1.1: Aims and Objectives 3 1.2: The Structure of the Report 3 Section 2 3 2.1: The Two Main Sources of Crime Statistics 3 2.2: How Have Levels of Crime Changed Over the Years 4 2.2.1: Violent and Sexual Crime 4 2.2.2: Property Crime 5 Section 3 6 3.1: Positive and Negative Incentives 6 3.1.1: Incarceration
Premium Crime
exchange rates‚ which is useful for international finance assignment. Exchange Rate is the price of one country’s currency in terms of another country’s currency; the rate at which two currencies are traded for another. It measures the number of units of one currency which exchange‚ in the foreign exchange market for one unit of another. Exchange rates are important because‚ they establish the relationships between the different currencies or monetary units of the world. Exchange rates have been
Premium Foreign exchange market Exchange rate Central bank
Exchange Rate December 2014 THE EXCHANGE RATE KEY DEFINITIONS AND CONCEPTS 1. How is the exchange rate defined? The exchange rate is the price of a unit of foreign currency in terms of the domestic currency. In the Philippines‚ for instance‚ the exchange rate is conventionally expressed as the value of one US dollar in peso equivalent. For example‚ US$1 = P44.00. In every exchange rate quotation‚ therefore‚ there are always two currencies involved. 2. Why is the exchange rate important? The exchange
Premium Foreign exchange market Exchange rate
Rate of Osmosis vs Solute Concentration Introduction: In nature‚ the quest to reach equilibrium‚ or the state of rest or balance due to the equal action of opposing forces (http://www.dictionary.com). Osmosis and diffusion are two ways that cells reach this equilibrium‚ without exerting energy. Due to the unique nature of the phospholipid bilayer‚ small molecules can pass through the semipermeable membrane easily‚ through diffusion (https://www.biologycorner.com). Water‚ however‚ has a slightly more
Premium Osmosis Concentration Diffusion
Enzymes are a type of protein. They are catalysts meaning they speed up the rate of the reaction. Enzymes activity depends on the concentration of the substrate‚ temperature and the pH. The more concentrated the substrate is the more reactive the enzyme is. The optimal pH for an enzyme is 7.5 and the optimal temperature for an enzyme is 53 Celsius. Extremes in the temperature and the pH of an enzyme can denature therefore destroy it. The enzyme that is in this experiment is Amylase. Amylase is found
Premium Enzyme Chemical reaction Catalysis
One view is that the literacy rate has risen from 72% to 90% in the last 30 years. According to the 2005 Functional Literacy‚ Education‚ and Mass Media Survey conducted by the National Statistics Office (NSO)‚ 48.4 million or 84% of the estimated 57.6 million Filipinos who are 10 to 64 years old are said to be "functionally" literate (Source: "8 out of 10 Filipinos are functionally literate" by D. Pepito‚ TODAY newspaper‚ February 17‚ 2005). Functional literacy was found to be higher in females
Free Philippines Provinces of the Philippines Regions of the Philippines
WAYS TO REDUCE THE EFFECTS OF GLOBAL WARMING Global Warming refers to the gradual increase in the Earth’s temperature as a result of the growing concentration of human induced green house gases which are carbon dioxide‚ chlorofluorocarbons and hydro fluorocarbon in our atmosphere. Global warming can be caused by the use of fossil fuels‚ and industrial or agricultural processes. Man-made emissions are adding to the amount of carbon dioxide already being naturally released. These
Premium Incandescent light bulb Carbon dioxide Fluorescent lamp