1-Escribe tres ejemplos de cambios químicos en los que se observe el desprendimiento de un gas sin aplicar calor. 2. Escribe tres ejemplos de cambios químicos en los que se observe la presencia de un precipitado.
3. Escribe tres ejemplos de cambios químicos en los que se observe la presencia de fuego o luz.

Which of the following units is not an official si unit

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.

Compare and contrast an assemblage and a pollen fingerprint by defying both and giving examples of each from the chapter.