Answer: The mole ratio of H : O in ammonium nitrate is 4 : 3.
Step-by-step explanation:
We are given a compound named ammonium nitrate having formula
![NH_4NO_3](https://img.qammunity.org/2020/formulas/chemistry/middle-school/hpiptc9dvdd33xpustj5r9zbtwzs4aq3tl.png)
There are 3 elements in this compound which are nitrogen, hydrogen and oxygen.
To calculate the mole ratio, we write the ratio of their subscripts. For this compound, it is:
![N:H:O::2:4:3](https://img.qammunity.org/2020/formulas/chemistry/middle-school/x01nvp1lykgui22f66k17cp91fmtefkran.png)
The mole ratio of H and O for this compound is 4 : 3.