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Chemistry

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Articles 33061 - 33090 of 33105

Full-Text Articles in Physical Sciences and Mathematics

Methyl Amines From Carbinol And Ammonium Chloride, Arthur Mark Howald Jan 1920

Methyl Amines From Carbinol And Ammonium Chloride, Arthur Mark Howald

Masters Theses

"During the spring of 1919 we undertook to prepare tri-methyl-amine for the Research Department of the Eastman Kodak Company in the Industrial Chemistry Laboratory of the Missouri School of Minds. According to V. Merz and K. Gasiorowski the three methyl amines were qualitatively proven to be present in the reaction products obtained by heating methyl alcohol, ammonia and zinc chloride to 220°C. in a bomb for fourteen hours. As these raw materials are inexpensive we attempted to prepare the tri-methyl-amine by this reaction employing for the purpose a small industrial autoclave. Methyl amines were obtained by the yield especially of …

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The Chemistry Of Nitrogenous Food Stuffs, Emma M. Schweigert May 1919

The Chemistry Of Nitrogenous Food Stuffs, Emma M. Schweigert

Chemistry Honors Papers

This 18 page thesis contains analyses of various nitrogenous foods.

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Non-Nitrogenous Foods, Edna M. Boyd Apr 1919

Non-Nitrogenous Foods, Edna M. Boyd

Chemistry Honors Papers

This eight page thesis discusses the chemical compositions of various non-nitrogenous foods.

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The Chemistry Of Selected Food Stuffs And Condiments, Leslie F. Rutledge May 1916

The Chemistry Of Selected Food Stuffs And Condiments, Leslie F. Rutledge

Chemistry Honors Papers

This 17 page thesis discusses the composition of various foods, including milk, butter, bread and wine.

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A Chemical Study Of The Enrichment Of Copper Sulfide Ores., John Dustin Clark Jun 1914

A Chemical Study Of The Enrichment Of Copper Sulfide Ores., John Dustin Clark

UNM Bulletins

The author reports on the results of sixty experiments on processes related to the enrichment of the sulfide ores of copper. Also submitted to Leland Stanford Junior University toward the Degree of Doctor of Philosophy.

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Portland Cement, Asphalts And Bitumens, George R. Ensminger May 1914

Portland Cement, Asphalts And Bitumens, George R. Ensminger

Chemistry Honors Papers

This 37 page thesis classifies and analyzes cements, rock asphalt and bitumen.

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Some Phenomena Which Accompany The Electrolysis Of Certain Salt Solutions, When The Electrodes Are Physically Separated By Means Of A Diaphragm Of Solid Gelatine, Containing The Same Salt As Is Used For The Electrolyte: A Study Of The Automatic Termination Of The Electrolysis, When Conducted Under The Above Conditions, Ernest Carl Wagner May 1914

Some Phenomena Which Accompany The Electrolysis Of Certain Salt Solutions, When The Electrodes Are Physically Separated By Means Of A Diaphragm Of Solid Gelatine, Containing The Same Salt As Is Used For The Electrolyte: A Study Of The Automatic Termination Of The Electrolysis, When Conducted Under The Above Conditions, Ernest Carl Wagner

Chemistry Honors Papers

This 22 page thesis is a record of work done during the summer of 1910, by Dr. W. H. Stoner, and during the summer of 1912 and the spring of 1914, by the writer, in the Chemical Laboratory of the Medico-Chirurgical College of Philadelphia.

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Estelle Angier Science Notebook, M. Estelle Angier Jan 1914

Estelle Angier Science Notebook, M. Estelle Angier

Scrapbooks

1914 science notebook of Estelle Angier (Class of 1914). Class notes, descriptions of experiments, and conclusions. Angier added an additional note at the end of the notebook in 1971.

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A Critical Examination Of The Kjeldahl Method For The Determination Of Nitrogen, Edward F. Danforth Jan 1914

A Critical Examination Of The Kjeldahl Method For The Determination Of Nitrogen, Edward F. Danforth

Archived Theses and Dissertations

No abstract provided.

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The Commercial Preparation Of Ammonium Nitrate From Ammonium Sulfate And Sodium Nitrate, Carl Emil Lauer Jan 1914

The Commercial Preparation Of Ammonium Nitrate From Ammonium Sulfate And Sodium Nitrate, Carl Emil Lauer

Archived Theses and Dissertations

No abstract provided.

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The Chemical And Physical Examination Of The Oils From The Seeds Of The Aster, Bachelor's Button, Larkspur, Muskmelon, Okra, Pansy, Snapdragon, Henry Neal Marsh Jan 1914

The Chemical And Physical Examination Of The Oils From The Seeds Of The Aster, Bachelor's Button, Larkspur, Muskmelon, Okra, Pansy, Snapdragon, Henry Neal Marsh

Archived Theses and Dissertations

No abstract provided.

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The Detection Of Poisons, Lloyd S. Cassel May 1913

The Detection Of Poisons, Lloyd S. Cassel

Chemistry Honors Papers

This 29 page thesis examines methods to determine the presence of various classes of poisons.

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Gravimetric Analysis, Walter M. Lauer May 1913

Gravimetric Analysis, Walter M. Lauer

Chemistry Honors Papers

This 16 page thesis examines gravimetric quantitative analyses of various metals.

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The Chemical Analysis Of Potable Waters, Ellwood Paisley May 1913

The Chemical Analysis Of Potable Waters, Ellwood Paisley

Chemistry Honors Papers

This 24 page thesis examines samples of drinking water, analyzing turbidity, sediment, odor and other elements present.

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Select Methods In Quantitative Chemical Analysis, Florence Ada Brooks May 1912

Select Methods In Quantitative Chemical Analysis, Florence Ada Brooks

Chemistry Honors Papers

This 18 page thesis examines various methods of quantitative chemical analysis.

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Chemical Analysis Of Foods And Their Adulterants: Being An Investigation Into The Nature, Relative Value And More Common Forms Of Adulterations Of Certain Foods, William Samuel Long Jan 1909

Chemical Analysis Of Foods And Their Adulterants: Being An Investigation Into The Nature, Relative Value And More Common Forms Of Adulterations Of Certain Foods, William Samuel Long

Chemistry Honors Papers

This 26 page thesis examines the composition, natural variations, and artificial variations of various foods.

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Design Of A Lead Blast Furnace, Walter Irving Phillips, Andrew Jackson Seltzer Jan 1907

Design Of A Lead Blast Furnace, Walter Irving Phillips, Andrew Jackson Seltzer

Bachelors Theses

"In order to get the approximate size of the Furnace we made the following assumptions, being guided as far as possible by the practice of the Globe Smelting Works at Denver, Colorado whenever that could be ascertained"--page 1.

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Analyses Of Limestones And Shales, Byron John Snyder Jan 1907

Analyses Of Limestones And Shales, Byron John Snyder

Bachelors Theses

"The limestones were analyzed to determine their value for cement and lime manufacture, and were taken from several counties in the state of Missouri. Most of the limestones examined were very pure. A considerable quantity of well burned lime is added to other material in the manufacture of cement, a lime of very pure type being the most acceptable in this work"--page 1.

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Comparative Observations On The Evolution Of Gas From The Cathode In Helium And Argon, Clarence A. Skinner Jul 1906

Comparative Observations On The Evolution Of Gas From The Cathode In Helium And Argon, Clarence A. Skinner

University Studies (University of Nebraska) (1888–1984)

No abstract provided.

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Analytical Determination Of Copper Products, Charles Dosh Smith Jan 1905

Analytical Determination Of Copper Products, Charles Dosh Smith

Bachelors Theses

"It is a well known fact that the presence of impurities in copper products has been a source of annoyance to the Chemist. The object of this thesis was to make myself familiar with the actions of different impurities in copper products, and the methods for the determination of Arsenic in the same"--page 1.

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Neutralization Of Free Acid (H₃P O₄) In Commercial Mono-Calcium Phosphate (Ca H₄ (Po₄), George William Harris, Harry Adam Grine Jan 1904

Neutralization Of Free Acid (H₃P O₄) In Commercial Mono-Calcium Phosphate (Ca H₄ (Po₄), George William Harris, Harry Adam Grine

Bachelors Theses

"The object of this thesis has been a systematic research based on the characteristic properties and reactions of mono-calcium phosphate, Ca H₄ (PO₄)₂, tending towards the development of a process for neutralizing the free phosphoric acid, H₃PO₄ formed during its manufacture"--page 1.

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The Determination Of Sulphuric Acid In The Presence Of Iron, Louis George Karl. Clarner Jr. Jan 1901

The Determination Of Sulphuric Acid In The Presence Of Iron, Louis George Karl. Clarner Jr.

Student and Lippitt Prize Essays

This essay attempts to determine the best way to detect sulfuric acid in the presence of iron by investigating the already existing methods and reviewing other chemists’ procedures.

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The Systhesis Of Camphor From Pinene, Edwin W. Newbury Jan 1900

The Systhesis Of Camphor From Pinene, Edwin W. Newbury

Bachelors’ Theses

The increasing demand for camphor for use in the manufacture of cellulose plastics has led to a great amount of investigation of the nature of this valuable substance and as to its synthesis from materials which are readily obtainable without the necessity for sending overseas for them. At present most of the camphor used in the manufacture of celluloid and allied compounds is imported from Japan or Borneo, where it is obtained, in a rather crude and wasteful fashion, from a species of laurel. Some scientifically operated camphor plantations have been started in the United States.. In one such plantation …

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The Determination Of Aluminium, Victor Hugo Gottschalk Jan 1900

The Determination Of Aluminium, Victor Hugo Gottschalk

Masters Theses

No abstract provided.

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Abnormal Vapor Densities, Minnie Elizabeth Rice Jan 1899

Abnormal Vapor Densities, Minnie Elizabeth Rice

Student and Lippitt Prize Essays

This essay questions Italian chemist Avogadro’s hypothesis about vapor densities, ultimately coming to the conclusion that Avogadro’s law is open to objection.

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Acetylene Gas; Its Preparation And Value As An Illuminant, Alfred W. Bosworth Jan 1899

Acetylene Gas; Its Preparation And Value As An Illuminant, Alfred W. Bosworth

Student and Lippitt Prize Essays

This essay briefly discusses the history of Acetylene gas and delves further into its production, uses and value.

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Combustion Analysis; Estimation Of Carbon & Hydrogen, Clifford Brewster Morrison Jan 1899

Combustion Analysis; Estimation Of Carbon & Hydrogen, Clifford Brewster Morrison

Student and Lippitt Prize Essays

Documents the methods of composition analysis by Antoine Lavoisier the 18th century and the adoption and refinement of this method by Theodore V. Saussure and others in the 19th century to combustion analysis. Includes plates of measurement equipment used.

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Assay Of Copper Matte For Gold And Silver, Walter E. Soest Jan 1899

Assay Of Copper Matte For Gold And Silver, Walter E. Soest

Bachelors Theses

"Ores containing copper, and especially copper matte, have always been very annoying in assaying for the precious metals. In assaying copper matte, and ores containing much copper, by the usual method of scorification, the losses of silver an gold are considerable, owing to the fact that in order to obtain lead buttons, which are soft and free from copper, repeated scorifications are necessary, and moreover it is impossible to obtain lead buttons which are entirely free from copper"--page 1.

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Action Of Caustic Hydroxides Upon Aluminum, Herbert Fordyce. Rogers Jan 1899

Action Of Caustic Hydroxides Upon Aluminum, Herbert Fordyce. Rogers

Bachelors Theses

No abstract provided.

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Studies In Tellurium, Victor Hugo Gottschalk Jan 1898

Studies In Tellurium, Victor Hugo Gottschalk

Bachelors Theses

No abstract provided.

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