Chapter 3, Problem 3.128P

Interpretation Introduction

Interpretation:

The mass percents of ammonium sulfate, ammonium hydrogen phosphate and potassium chloride required to prepare 10/10/10 plant fertilizer are to be determined.

Concept introduction:

The number of moles is calculated by the formula as given below:

  $\text{Number of moles}=\frac{\text{given mass of sample}\left(\text{g}\right)}{\text{molar mass (g/mol)}}$        (1)

The formula to calculate mass is as follows:

  $\text{Mass of a given sample}\left(\text{g}\right)=\left(\text{molecular mass}\left(\text{g/mol}\right)\right)\left(\text{number of moles}\right)$        (2)

The formula to calculate the mass percentage is as follows:

  $\text{Mass }\%=\left(\frac{\text{given mass}\left(\text{g}\right)}{\text{total mass of mixture}\left(\text{g}\right)}\right)\left(100\%\right)$        (3)