1. The mass of one mole of an atom or molecule is equal to the atomic mass units of one individual atom or molecule. ie. amu! g/mol. Recall also, that there are 6.02x1023atoms or molecules per mole. Use this information to convert between moles, grams, and molecules in the following. Last week we learned how to convert moles to molecules-now we will practice the reverse and a few other things...

a. How many moles are in the following?
i.6.02x1023molecules of BF3

ii.78,000,000 atoms of Ag

iii.9.24x1021grains of sand