Trichloroacetic acid (HC2Cl3O2) is a corrosive acid that is used to precipitate proteins. The pH of a 0.072 M solution of trichloroacetic acid is the same as the pH of a 0.057 M HCl solution. Calculate Ka for trichloroacetic acid.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

What is the mass of each element in a 324.8 sample of co2

An observation that requires measurement is called quantitative observable or qualitative