Natri hiđrocacbonat được dùng làm bột nở trong công nghiệp thực phẩm , dùng chế thuốc chữa đau dạ dày,...Công thức của natri hỉđocacbonat là gì ?

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

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.