Pyrite is also known as “fool’s gold” because it looks like real gold. However, gold and pyrite can be distinguished based on their densities. Gold has a density of 19.3 g/cm3. A sample of pyrite has a mass of 10 grams and occupies 2 cm3. What is the density of pyrite? A.19.3 g/cm3
B.10 g/cm3
C.5 g/cm3
D.2 g/cm3

What is the percentage composition of carbon in the compound ch4

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.

Why is the bottom layer of a trophic pyrimid the