UNT Theses and Dissertations - 8 Matching Results

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A Comparative Study of Errors in Chemistry and English Found in Examination Papers of Freshman Chemistry

Description: This study attempts to discover what types of errors are commonly made by students in freshman chemistry classes. It considers the errors resulting from the students' lack of knowledge of the subject taught, and errors attributed to their failure to use correct English in their expression of ideas.
Date: August 1938
Creator: Phillips, Annie
Partner: UNT Libraries

Determination of Nitrogen, Phosphorus, and Potassium in Various Plants

Description: This study attempted to form some conception, through the analysis of a representative group of plants in the vicinity of Denton, of the amount of the three essential elements in the leaves as compared with the amount in the woody portions. The comparison of leaf with stem as to the quantity of nitrogen, phosphorus, and potassium is explained.
Date: August 1938
Creator: Holloway, J. B. Menlo
Partner: UNT Libraries

Molecular Dimensions

Description: This study attempts to calculate the areas of the cross section and diameter of the CH3 group, COOH group, the length of the carbon chain, and the longtiudinal distance between carbon atoms for each of the three acids. It also attempts to develop a method of measuring the effective diameter of molecules of gases. Equations for these terms as given by MacDougall and experiments were performed and the data applied to the equation.
Date: August 1938
Creator: Moss, H. H.
Partner: UNT Libraries

A Physical and Chemical Investigation of Eagle Mountain Lake with Reference to Biological Productivity

Description: The purpose of this investigation is to attempt by correlation of chemical-physical factors to ascertain if any one of the necessary features might act as a factor limiting growth and reproduction of either plants or animals. The body of water used in this investigation is Eagle Mountain Lake, a reservoirs approximately five years of age.
Date: August 1938
Creator: Smith, Burns Ashby
Partner: UNT Libraries

The Rate of Natural Fermentation of Various Solutions with Regard to Temperature

Description: The purpose of this study is to investigate the rate of natural fermentation of solutions at different temperatures. Whatever microorganisms that chanced to be present in the air and that chanced to fall into the inoculating medium are the ones which brought about fermentation when transferred to the fermentable solution.
Date: August 1938
Creator: Lambert, Frank E.
Partner: UNT Libraries