# equations

Noun

- plural form of
*equation*

- Energyequations, such as the above, may be operated with precisely as if they were algebraic
**equations**, a property which is of great advantage in calculation. - Often assumptions are made which lead to
**equations**in x which cannot be solved "rationally," i.e. - Among the great variety of problems solved are problems leading to determinate
**equations**of the first degree in one, two, three or four variables, to determinate quadratic**equations**, and to indeterminate**equations**of the first degree in one or more variables, which are, however, transformed into determinate**equations**by arbitrarily assuming a value for one of the required numbers, Diophantus being always satisfied with a rational, even if fractional, result and not requiring a solution in integers. - The distribution of weight in chemical change is readily expressed in the form of
**equations**by the aid of these symbols; the equation 2HC1+Zn =ZnCl2+H2, for example, is to be read as meaning that from 73 parts of hydrochloric acid and 65 parts of zinc, 136 parts of zinc chloride and 2 parts of hydrogen are produced. - The combination, as it is ordinarily termed, of chlorine with hydrogen, and the displacement of iodine in potassium iodide by the action of chlorine, may be cited as examples; if these reactions are represented, as such reactions very commonly are, by
**equations**which merely express the relative weights of the bodies which enter into reaction, and of the products, thus Cl = HC1 Hydrogen.

» more...

Create and save customized flash cards. Sign up today and start improving your vocabulary!