Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
Premium Hydrochloric acid Hydrogen Chlorine
REACTION PAPER ON THREATS TO NATIONAL SECURITY With the events between the United States of America and Syria leading towards a possible world war‚ never has national security become so vital. There are various factors that pose threats to the sovereignty of our country. Peace talks between President Benigno Aquino III’s administration and the Moro Islamic Liberation Front are once again at a standstill‚ with the MILF having doubts on forging a wealth-sharing deal with the government. The Autonomous
Free Philippines
history of America‚ millions of people have come from all over the world have come to experience the American dream. The United States of America has become such an eye catching place because it strives for opportunity. It is the right to life‚ liberty‚ and pursuit of happiness that creates the opportunity to allow an individual to achieve dreams in life. In the preamble‚ Jefferson states that every man has the right to life. It may be a basic concept‚ but during the time of the Native Americans
Premium United States Americas Political philosophy
metals arranged in order of their reactivity based on displacement reactions‚ reduction of their oxides by hydrogen or carbon‚ the relative ease of decomposition of their compounds and reactions with oxygen‚ dilute acids and water. The higher up a metal is in the reactivity series‚ the more reactive it is. In the experiment conducted‚ the three metals‚ magnesium‚ zinc and copper each had to undergo displacement reactions and reactions with water‚ oxygen and dilute acids‚ to arrange them in the order
Premium Zinc Oxygen Metal
Title Experiment 17 Reaction Kinetics- Determination of the Activation Energy of the Reaction Between Oxalic Acid and Potassium Permanganate. Objective To determine the activation energy of the reaction between oxalic acid and potassium permanganate. Theory and Background Activation energy is the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport. In terms of the transition-state
Free Chemical kinetics Chemical reaction Reaction rate
The role and place of Sir James Douglas in the development of British Columbia Dylan Koltz Hale HIST-1390-A01 – History of Colonial Canada: 1500-1885 Prof. Friesen 11/14/2013 Sir James Douglas was a born a world away from the west coast of Canada‚ but over the course of his life he had irrevocably altered the area we know today as British Columbia. Born in British Guyana he was one of three children of Martha Ann Ritchie; a mixed race women known as a “free coloured”. His father
Premium British Columbia British Empire Hudson's Bay Company
Coupled Reactions Louella Rose E. Tan‚ Frances May L. Coralde Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines Results and Discussion A combustion reaction is a reaction that liberates heat and light. Magnesium is a stable element and reacts violently with evolution of much heat and light. The reason the magnesium burned in carbon dioxide was because it combined with the oxygen in the CO2 leaving elemental carbon behind. CO2(g) C(S) + O2(g)
Premium Adenosine triphosphate Carbon dioxide Oxygen
history of slavery and the role Native Americans played in it. Snyder’s discussion is centralized around the economic and culture ties slavery participated to in Native American life before and after European introduction into North America. A vial part in understanding the role of slavery to the natives is being able to distinguish why there was a need for slavery to be implemented and to understand how the slaves would be integrated into the societies of the natives.1 From this discussion Snyder
Premium Slavery Slavery in the United States Atlantic slave trade
or not children should have support in their native languages‚ there are surprisingly several theories. With each article and author‚ with each study‚ a new idea is formed. Likewise‚ non-linguists responded the same way. For the interviews‚ I interviewed Isaac‚ Betty‚ and Chantelle. All thought that support came from the family and they had various reasons why they thought so; when it came to potential problems‚ social factors were the answer. Native Language Support Betty believed that there
Premium Language Linguistics Multilingualism
Redox reactions (Redox terminology‚ galvanic cells‚ standard electrode potentials‚ strength of oxidizing/reducing agents‚ corrosion and protection against it) Oxidation is defined as the loss of electrons and reduction is defined as the gain of electrons. Oxidizing agents‚ such as oxygen are defined as substances which accept electrons; reducing agents are substances which donate electrons. Redox reactions are: a) The reactions of metals with non-metals 2Na+Cl2→2Na+Cl- b) The reactions
Premium Electrochemistry Hydrogen