Đổi 50kg = 50000g
Ta có: \(n_{NPK}=\dfrac{50000}{84}=\dfrac{12500}{21}\left(mol\right)\)
\(m_N=\dfrac{12500}{21}.14\approx8333,3\left(g\right)=8,3333\left(kg\right)\)
\(m_P=\dfrac{12500}{21}.31\approx18452\left(g\right)=18,452\left(kg\right)\)
\(m_K=\dfrac{12500}{21}.39\approx23214\left(g\right)=23,214\left(kg\right)\)