Respuesta :

A mole is equivalent to 6.02 x 10^23 molecules at STP. Use a conversion factor like the following.
Example: The initial value x  The value you are trying to convert to
                                               ------------------------------------------------
                                              The value you are trying to get rid of

well there are different ways in which you can find number of mole.
1. mole =mass divide by Mr
2. mole= concentration multiply by volume
3.PV =NRT 9For ideal gas) wher N is the number of mole

it all depends on the question!!!