Quickest and best answer will get brainlest along with 30 points!! i have more questions like this but I cant post all the images so anything will be appreciated

instructions: input the correct answer for the place of the described number/symbol and remember NO spaces.

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

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.