CHEM 1110 Group Quiz 12 - test 1 -  moles, grams and Avogadro's number.
(NA = 6.022 x 1023 mol-1)

Names:


1)   How many moles of carbon (C) are contained in 54.0 g of carbon?
 


 



 

                                                                             ____________________ mol
         How many atoms is this?


 

                                                                            ____________________ atoms

2)   What is the mass of 9.0 x 1024 atoms of sodium (Na)  (MM = 22.9898 g/mol)?



 
 

                                                                               ____________________ g