Answer: 0,4278g of F and 0,4191g of Fe
Explanation: it's possible to calculate the mass of each element by multiplying the percentage (decimal) of the element by the mass of the compound. 
For Fluorine (F) 
0,847g * 0,5051 = 0,4278g of F
For iron (Fe) 
0,847 * 0,4949 = 0,4191g of Fe
This is determined because even when the compound is decomposed, due to conservative law of mass, the decomposition process do not affect the amount of matter, so the mass of the elements remain even if they are separated from the original molecule. 
At the end, the sum of the elements masses should be the total mass of the compound. 
 
        
                    
             
        
        
        
I can not answer your question because i am a  person who is not smart
 and will never become smart
        
             
        
        
        
Answer:
I and IV are the correct answers
Explanation:
 
        
             
        
        
        
Like mitosis, meiosis is a form of eukaryotic cell division. However, these two processes distribute genetic material among the resulting daughter cells in very different ways. meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell. Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!