Names:

1)  Calculate the percent of each element in the compound NaNO ₃.
 
 

                                                                                            % Na =                            %

                                                                                            % N   =                            %

                                                                                            % O   =                            %

2)  A compound consists of Na, P and O in the following percentages:  42.1%, 18.9% and 39.0% respectively.  What is the empirical formula for this compound

                                                                                        ANS:  Na_{____}P_{____}O_{____}