It is desired to design a packed tower for continuously absorbing nh3 from air by a countercurrent water flow in an absorption tower using the following data: l' #41 = .05 0.000512 201bmol of air ht ft2 ; vol . flow rate= 108,000 ft3 of gas entering at 27°c and 1 atm hr equilibrium relationship: y=0.8 x ; kya-10 ibrnol nh3 per (hr-ft*) 19.2 lbmol nha (hr ft3) calculate: a. mass flow rate of entering gas in lbmol/hr b. mass flow rate of nh3-free air entering in lbmol /hr c. xi concentration of ammonia in the leaving water stream d. l'㎜ e. diameter of tower and superficial velocity of gas flow. f. height of packed section

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

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