Question

find the mole of the following

Answer 1

there is no actual formula for that...u have to solve it with unitary method.....122 moles of a substance weighs the gram atomic(Inn monotonic substances) or gram molecular mass of the substance(in case of polyphonic gases)

hope this answers ur question..

Answer 2

hey mole=given mass/molar mass
so for 1 we have 12/32=0.3u
and for 2 we have 20/18=1.12u
and for 3 we have22/44=0.5u