You have a sample of a radioactive isotope of an element called "Hysterium." The half life of "Hysterium" is 6 days. If you start with a 200 g sample of "Hysterium,"
what mass of "Hysterium" will remain after 30 days?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

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.