4 - Ms McRae`s Science
... reaction) the reaction takes longer indicating a lower rate of reaction and must be due to the nature of the reactants. Surface area is not a factor as the reactants are all aqueous solutions. No catalyst is indicated. ...
... reaction) the reaction takes longer indicating a lower rate of reaction and must be due to the nature of the reactants. Surface area is not a factor as the reactants are all aqueous solutions. No catalyst is indicated. ...
Exam practice answers 5
... white solid and MgBr2 would give a cream solid. If dilute ammonia, NH3, is added the white precipitate dissolves. The cream precipitate will only dissolve in concentrated NH3. There are other ways of doing this such as: Both solutions would conduct electricity. If electricity is passed through t ...
... white solid and MgBr2 would give a cream solid. If dilute ammonia, NH3, is added the white precipitate dissolves. The cream precipitate will only dissolve in concentrated NH3. There are other ways of doing this such as: Both solutions would conduct electricity. If electricity is passed through t ...
Hydrogen as Energy Carrier Part 1 Powerpoint
... UCLA Science and Engineering of the Environment GK-12 ...
... UCLA Science and Engineering of the Environment GK-12 ...
Industrial Chemistry - Deans Community High School
... 20 years. Many years of trials may be needed before the drug even becomes commercially available. The Government is also involved in this process, providing the necessary licensing for the new drug. The Chemical Industry earns £1000 million pounds a year in ‘invisible earning’ for licensing fees for ...
... 20 years. Many years of trials may be needed before the drug even becomes commercially available. The Government is also involved in this process, providing the necessary licensing for the new drug. The Chemical Industry earns £1000 million pounds a year in ‘invisible earning’ for licensing fees for ...
HONORS: UNIT 2B: Antacids Below are the class objectives
... Below are the class objectives, correlated to the NC Essential Standards and page numbers within your textbook. In the far right column you will see the required vocabulary of the unit as well. At the end of each unit, you should be able to define and apply all the required vocabulary words in order ...
... Below are the class objectives, correlated to the NC Essential Standards and page numbers within your textbook. In the far right column you will see the required vocabulary of the unit as well. At the end of each unit, you should be able to define and apply all the required vocabulary words in order ...
CH225h - Oregon State chemistry
... temperature is too low, the forward rate constant may be too small. The optimal temperature is about 500 °C. 3. Extract NH3 while it’s formed , to keep the concentration low. 4. Use an appropriate catalyst (Fe metal based). ...
... temperature is too low, the forward rate constant may be too small. The optimal temperature is about 500 °C. 3. Extract NH3 while it’s formed , to keep the concentration low. 4. Use an appropriate catalyst (Fe metal based). ...
Catalytic Synthesis of Organophosphorus Compounds from
... valuable organophosphorus derivatives (trialkylphosphates, dialkylphosphites, trialkylphoshinoxides, phosphonium salts) are reviewed. The principal features of the oxidative phosphorylation reactions which are of great practical importance are described. The mechanisms of the catalytic oxidative P-O ...
... valuable organophosphorus derivatives (trialkylphosphates, dialkylphosphites, trialkylphoshinoxides, phosphonium salts) are reviewed. The principal features of the oxidative phosphorylation reactions which are of great practical importance are described. The mechanisms of the catalytic oxidative P-O ...
writing and balancing equations
... • Hydrogen gas combined with Oxygen gas will produce Dihydrogen Monoxide liquid H 2 + O 2 H 2O • Should be: • H2(g) + O2(g) H2O(l) ...
... • Hydrogen gas combined with Oxygen gas will produce Dihydrogen Monoxide liquid H 2 + O 2 H 2O • Should be: • H2(g) + O2(g) H2O(l) ...
Chemistry Unit Test Review
... Students added liver to hydrogen peroxide. The mass of the substance after the reaction took place was less than the mass before. What might have accounted for the mass being different after? ...
... Students added liver to hydrogen peroxide. The mass of the substance after the reaction took place was less than the mass before. What might have accounted for the mass being different after? ...
Paper
... (ii) The two hydrocarbons used as references when establishing the octane number of a fuel are heptane and 2,2,4-trimethylpentane. Draw the structure of each of these molecules. ...
... (ii) The two hydrocarbons used as references when establishing the octane number of a fuel are heptane and 2,2,4-trimethylpentane. Draw the structure of each of these molecules. ...
Practical, Asymmetric Redox-Neutral Chemical Synthesis via Borrowing Hydrogen
... “redox economy” which focuses on minimizing synthetic steps that only adjust the oxidation state of the intermediates without generating structural complexity is an important consideration at the strategic level for chemical synthesis, and redox-neutral transformations that circumvent such redundant ...
... “redox economy” which focuses on minimizing synthetic steps that only adjust the oxidation state of the intermediates without generating structural complexity is an important consideration at the strategic level for chemical synthesis, and redox-neutral transformations that circumvent such redundant ...
Catalysis
... 4. Enzyme catalysed reactions are much more sensitive to catalytic poisons such as HCN, H2S, CS2 etc. The inhibitors interact with the active functional groups present on the enzyme surface and often reduce or completely destroy the catalytic activity of the enzymes 5. The activity of certain enzym ...
... 4. Enzyme catalysed reactions are much more sensitive to catalytic poisons such as HCN, H2S, CS2 etc. The inhibitors interact with the active functional groups present on the enzyme surface and often reduce or completely destroy the catalytic activity of the enzymes 5. The activity of certain enzym ...
Date Hour
... Aqueous solution (a metal salt dissolved in water or an acid or base). The word solution is your clue that you are to use the subscript (aq). ...
... Aqueous solution (a metal salt dissolved in water or an acid or base). The word solution is your clue that you are to use the subscript (aq). ...
CHEMICAL REACTION
... These easily observed changes indicate that a chemical reaction may have taken place. Absolute proof is provided by chemical analysis of the products. ...
... These easily observed changes indicate that a chemical reaction may have taken place. Absolute proof is provided by chemical analysis of the products. ...
Chemical Reactions
... What is a chemical reaction? • A chemical reaction is the process by which the atoms of one or more substances are rearranged to form different substances. ...
... What is a chemical reaction? • A chemical reaction is the process by which the atoms of one or more substances are rearranged to form different substances. ...
Chapter 12
... –Methane (50-90%); Ethane (1-10%); Propane & Butane (up to 8%) Petroleum (crude oil): this is a complex mixture of both cyclic and acyclic hydrocarbons which can be separated by a process known as fractional distillation. Physical Properties of Hydrocarbons All are insoluble in water –Consider the p ...
... –Methane (50-90%); Ethane (1-10%); Propane & Butane (up to 8%) Petroleum (crude oil): this is a complex mixture of both cyclic and acyclic hydrocarbons which can be separated by a process known as fractional distillation. Physical Properties of Hydrocarbons All are insoluble in water –Consider the p ...
Unit 5 and 6 revsion - Deans Community High School
... Q14. The burning of fossil fuels is a major source of air pollution. (a) Name the acidic gas formed when air in a car engine is sparked. (b) Name the acidic gas formed when coal with a high sulphur content is burned. (c) Name the toxic gas formed when methane is burned in a limited supply of air. (d ...
... Q14. The burning of fossil fuels is a major source of air pollution. (a) Name the acidic gas formed when air in a car engine is sparked. (b) Name the acidic gas formed when coal with a high sulphur content is burned. (c) Name the toxic gas formed when methane is burned in a limited supply of air. (d ...
Writing Chemical Equations KClO3 O2 (g) + KCl (s) Balancing
... Triangle or “heat” above or below the yield symbol indicates that heat is supplied to the reaction. A formula written above or below the yield symbol indicates that a catalyst is used. In this example Platinum is the catalyst. ...
... Triangle or “heat” above or below the yield symbol indicates that heat is supplied to the reaction. A formula written above or below the yield symbol indicates that a catalyst is used. In this example Platinum is the catalyst. ...
What are reactions? - UTLNET Secure Site
... element equation gases heat products reactants reaction reversed word ...
... element equation gases heat products reactants reaction reversed word ...
Name________________ Hour____ Chapter 11 Review 1. Name
... 2 atoms of solid aluminum react with 6 molecules of liquid water to produce 3 molecules of hydrogen gas and 2 formula units of solid aluminum hydroxide. 4. Write in symbols: 2 formula units of solid lead (IV) oxide decomposes in the presence of heat to produce 2 formula units of solid lead (II) oxid ...
... 2 atoms of solid aluminum react with 6 molecules of liquid water to produce 3 molecules of hydrogen gas and 2 formula units of solid aluminum hydroxide. 4. Write in symbols: 2 formula units of solid lead (IV) oxide decomposes in the presence of heat to produce 2 formula units of solid lead (II) oxid ...
Catalytic reforming
Catalytic reforming is a chemical process used to convert petroleum refinery naphthas distilled from crude oil (typically having low octane ratings) into high-octane liquid products called reformates, which are premium blending stocks for high-octane gasoline. The process converts low-octane linear hydrocarbons (paraffins) into branched alkanes (isoparaffins) and cyclic naphthenes, which are then partially dehydrogenated to produce high-octane aromatic hydrocarbons. The dehydrogenation also produces significant amounts of byproduct hydrogen gas, which is fed into other refinery processes such as hydrocracking. A side reaction is hydrogenolysis, which produces light hydrocarbons of lower value, such as methane, ethane, propane and butanes.In addition to a gasoline blending stock, reformate is the main source of aromatic bulk chemicals such as benzene, toluene, xylene and ethylbenzene which have diverse uses, most importantly as raw materials for conversion into plastics. However, the benzene content of reformate makes it carcinogenic, which has led to governmental regulations effectively requiring further processing to reduce its benzene content.This process is quite different from and not to be confused with the catalytic steam reforming process used industrially to produce products such as hydrogen, ammonia, and methanol from natural gas, naphtha or other petroleum-derived feedstocks. Nor is this process to be confused with various other catalytic reforming processes that use methanol or biomass-derived feedstocks to produce hydrogen for fuel cells or other uses.