There are 4 moles of H in one mole of [tex]NH_4NO_3[/tex]. How many hydrogen atoms are present in one mole of ammonium nitrate?

A. [tex]1.81 \times 10^{24}[/tex] atoms
B. [tex]6.02 \times 10^{23}[/tex] atoms
C. [tex]2.41 \times 10^{24}[/tex] atoms
D. [tex]1.20 \times 10^{24}[/tex] atoms



Answer :

To determine the number of hydrogen atoms in one mole of ammonium nitrate ([tex]\(NH_4NO_3\)[/tex]), we proceed with the following steps:

1. Identify the number of hydrogen atoms per molecule of [tex]\(NH_4NO_3\)[/tex]:
- Ammonium nitrate ([tex]\(NH_4NO_3\)[/tex]) has a chemical formula that indicates it consists of one ammonium ion ([tex]\(NH_4^+\)[/tex]) and one nitrate ion ([tex]\(NO_3^-\)[/tex]).
- The ammonium ion ([tex]\(NH_4^+\)[/tex]) contains 4 hydrogen atoms.

2. Determine the number of hydrogen atoms in one mole of ammonium nitrate:
- Since one mole of ammonium nitrate contains 4 moles of hydrogen atoms, we know that each mole of ammonium nitrate ([tex]\(NH_4NO_3\)[/tex]) corresponds to 4 moles of hydrogen atoms.

3. Use Avogadro's number to find the total number of hydrogen atoms:
- Avogadro's number ([tex]\(6.022 \times 10^{23}\)[/tex]) tells us the number of atoms or molecules in one mole of a substance.
- To determine the total number of hydrogen atoms, we multiply the number of moles of hydrogen atoms (which is 4) by Avogadro's number.

[tex]\[ \text{Total number of hydrogen atoms} = 4 \times 6.022 \times 10^{23} \][/tex]

4. Calculate the total number of hydrogen atoms:
- Performing the multiplication, we get:

[tex]\[ \text{Total number of hydrogen atoms} = 2.4088 \times 10^{24} \][/tex]

Therefore, the number of hydrogen atoms present in one mole of ammonium nitrate ([tex]\(NH_4NO_3\)[/tex]) is [tex]\(2.41 \times 10^{24}\)[/tex], matching option C.

Final Answer:
C. [tex]\(2.41 \times 10^{24}\)[/tex] atoms