In an ideal gas, collisions between molecules . A.
are elastic
B.
do not lose energy due to friction
C.
result in the total energy of the system remaining constant
D.
all of the above

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

fe 55.85 g/mol and h2o 18.02 g/mol.