This chemical equation represents a chemical reaction. CaCO3 + 2HCI – CO2 +CaCl2 + H20
Which chemical is a reactant in this reaction?
O A. CO2
B. CaCl2
O C. HCI
O D. H20

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Word equation for k(s) +h2o(l) yield koh (aq) + h2

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.