Asked by Alissa L
                Answer the following questions about Fe(NO3)3. 
a. What is the mass percent of iron in this compound?
b. A different iron compound is 34.43% by mass iron. What mass of this compound is needed to get 125g of
pure iron?
            
        a. What is the mass percent of iron in this compound?
b. A different iron compound is 34.43% by mass iron. What mass of this compound is needed to get 125g of
pure iron?
Answers
                    Answered by
            DrBob222
            
    You aren't telling me what you think. Do you know how to get percent? That's
%Fe = [(mass Fe/mass Fe(NO3)3]*100 = ? Use atomic masses and molar mass for mass.
For part b plug the numbers in part b into the equation I gave you for % and turn the crank.
    
%Fe = [(mass Fe/mass Fe(NO3)3]*100 = ? Use atomic masses and molar mass for mass.
For part b plug the numbers in part b into the equation I gave you for % and turn the crank.
                    Answered by
            Alissa L
            
    thank you very much, if i am correct i think the answer for part b. should be approximately 363g?
    
                    Answered by
            DrBob222
            
    You're right. Go to the head of the class.
    
                    Answered by
            Alissa L
            
    thank you, I greatly appreciate your help.
    
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