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                                    6%. Find the mass of nitrogen supplied to soil by 5 kg of urea, CO(NH2)25. Find the mass of nitrogen supplied to soil by 5 kg of urea, CONHan(O16, N-14, C12, H-1) | 
                            
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Answer»  molar mass of urea = 16+12+16+16 = 60 % of nitrogen by mass in 1 mole of Urea = 28/60 = 46.66% now mass of N in 5g urea = 5*(46.66/100) = 2.33g  | 
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