A piece of copper metal was added to an aqueous solution of silver nitrate, and within a few minutes it was observed that a grey crystalline solid formed on surface of the copper The solution turned a blue color characteristic of copperD lons. Select the correct balanced chemical equation for this reaction. A. Cues) AgNOe)Ags) CuNOB. Cuts) AgNOylaq)Agis) CuNOsa) C. Culs)+ 2AgNOglac)2Agls) CuNO2(aq)D. 2Cus) 2AgNOlaq)-2Ags) +2CuNO2aq E. None of the above

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

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.

Most metamorphosis processes take place