Answer:
2,33 kg nitrogen
Explanation:
MOLAR MASS UREA = 12 + 16 + 2*14 + 4*1 = 28 + 28 + 4 = 60 g/mole
5kg = 5000g
1 mole - 60 g
x mole - 5000 g
x = 500/6 mole
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1 mole urea - 28 g nitrogen
500/6 mole - y
y = 7000/3 g ≅ 2333,33 g ≅ 2,33 kg nitrogen
