"Classify the following as physical or chemical changes. a. Moth balls gradually vaporize in a closet. b. Hydrofluoric acid attacks glass and is used to etch calibration marks on glass laboratory utensils. c. A French chef making a sauce with brandy is able to boil off the alcohol from the brandy, leaving just the brandy flavoring. d. Chemistry majors sometimes get holes in the cotton jeans they wear to lab because of acid spills."
kindly explain as well.
By agitating the coffee inside this sealed, insulated container, the person is raising the internal energy of the coffee, which will result is a r...
The emission spectrum of a element or chemical compound may be the spectrum of frequencies of nonparticulate radiation emitted as a result of an atom...