How many moles of water, h2o contain 2.0x10^22 molecules of water

I mole of water has an Avogadro number of molecules.

1 mole = 6.02 * 10^ 23  molecules.

6.02 * 10^ 23  molecules  =  1 mole of water
 
1 molecule                        =  1/(6.02 * 10^23)  mole of water

2.0 * 10^22 molecules would have   =    (2*10^22) * 1/(6.02*10^23)

                                                             = 0.033

2* 10 ^22 molecules of water would have 0.033 moles of water.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error