A person uses a pulley to raise a flag up a 15 meter flagpole. The weight of the flag is 45 Newtons. The person pulls down on the rope with a force of
50 Newtons through a distance of 15 meters.

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius

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.

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %