Asked by tomi
                Determine the number of moles of 
a) N atoms in 42.5g of Mg(NO3)2
b) N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 12.6g C6H12O6
            
            
        a) N atoms in 42.5g of Mg(NO3)2
b) N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 12.6g C6H12O6
Answers
                    Answered by
            bobpursley
            
    Why are you posting multiple questions under different names?
You can figure the number of moles of molecules from the mol mass. Then, multiply by the number of atoms per mol mass.
    
You can figure the number of moles of molecules from the mol mass. Then, multiply by the number of atoms per mol mass.
                    Answered by
            tomi
            
    i don't get what u mean
    
                    Answered by
            DrBob222
            
    What is the molar mass of Mg(NO3)2? How many mols of Mg(NO3)2 are there in 42.5 g?  How many mols N are in 1 mol Mg(NO3)2? 
    
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