(CP95) (a) Calculate the molecular mass of
nitrogen dioxide (NO2) (Atomic mass of N =
14, of O =16)
(b) Calculate the mass in kg of one NO2
molecule.
(CP96) The density of air at 0°C and 1.0 ATM
is 1.29 kg/m3. Assuming it is entirely composed
of nitrogen molecules N2, how many moles and
how many molecules of N2 are there in 1.0 cc
of air? (molecular mass = 28u)
(CP97) Calculate the density of
3
nitrogen gas (in kg/m ) at 100°C
and 1.0 ATM.
(CP98) The volume of a balloon at
0°C is 2.0 L. What is its volume
when the temperature rises to
100°C ?
(CP99) As a result of rapid
compression, the volume of a gas
at 1.0 ATM pressure is reduced to
half its original value and the
temperature rises from 20°C to
40°C. What is the final pressure?