How can you account for the fact that a stone and a feather fall at the same rate in vacuum but at different rates in air?

How would you account for the fact that [Ni(CO)_4] has tetrahedral geometry ?

How can you feel air ?

How would you account for the fact that Ni(CO)_4 has tetrahedral geometry?

How would you account for the following? The atomic radii of the metals of the third (5d) series of transition elements are virtually the same as those of the corresponding members of the second (4d) series.

(a) Can you now tell the order of the rotational symmetry for an equilateral triangle ? (b) How many position are there at which the triangle looks acactly the same when rotated about its centre by 120^(@) ?

Two consecutive irreversible first order reactions can be represented by Aoverset(k_(1))(rarr)Boverset(k_(2))(rarr)C The rate equation for A is readily interated to obtain [A]_(t)=[A]_(0).e^(-k_(1(t))) , and [B]_(t)=(k_(1)[A]_(0))/(k_(2)-k_(1))[e^(-k_(1)(t))-e^(-k_(2)(t))] Select the correct statement for given reaction: a) A decreases linearly b) B rise to a max. and then constant c) B rises to a max and the falls d) The slowest rate of increases of C occuring where B is max