Respuesta :
Answer:
The fertilizer has 0.3kg of nitrogen, 0.1kg of phosphorus and 0.8kg of potassium.
Explanation:
The series 12-4-32 indicates the percentage of each element in the fertilizer. So, in this case, there are 12% of nitrogen, 4% of phosphorus and 32% of potassium, and the rest will be oxygen.
knowing that the 100% of the fertilizer is equivalent to 2.5kg, we can calculate the mass of each element using a mathematical rule of three:
• Mass of Nitrogen:
[tex]\begin{gathered} 100\%-2.5kg \\ 12\%-x=\frac{12\%*2.5kg}{100\%} \\ x=0.3kg \end{gathered}[/tex]• Mass of Phosphorus:
[tex]\begin{gathered} 100\%-2.5kg \\ 4\%-x=\frac{4\%*2.5kg}{100\%} \\ x=0.1kg \end{gathered}[/tex]• Mass of potassium:
[tex]\begin{gathered} 100\%-2.5kg \\ 32\%-x=\frac{32\%*2.5kg}{100\%} \\ x=0.8kg \end{gathered}[/tex]So, the fertilizer has 0.3kg of nitrogen, 0.1kg of phosphorus and 0.8kg of potassium.
