Aballoon filled with 1.0 mol of argon is placed into a large chamber filled with air at 300 k and 1.0 atm. first, a vacuum pump attached to the chamber reduces the pressure to 0.1 atm. the vacuum pump is turned off, and the chamber is sealed. second, the chamber is heated to 400 k (the gas inside the chamber remains in thermodynamic equilibrium with the chamber walls). cp, m (ar)=20.79 j mol-1 k-1 calculate for this combined process, where the system is defined as the gas inside the balloon, which behaves as a perfect gas under these pressure conditions. (hint: choose any path you want; e. g. the second step could be broken down into heating from 300 to 400 k followed by irreversible isothermal expansion from 0.1 atm to the final pressure.)

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance