In what respect will two dry samples of nitrogen gas differ from each other if sample 1 is prepared by completely removing CO2 and O2 from air, and sample 2 is prepared by passing purified nitrogen(i)oxide over heated copper? sample 1 is
-
A.
purer than sample 2 -
B.
slightly denser than sample 2 -
C.
in all respects the same as sample 2 -
D.
colourless but sample 2 has a light brown colour -
E.
slightly less reactive than sample 2