Design a procedure that would test the law of conservation of mass for a burning log

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released