Final answer:
Three moles of ammonium phosphate ((NH₄)₃PO₄) contain 36 moles of hydrogen since each mole contains 12 moles of hydrogen atoms.
Step-by-step explanation:
The question asks us to calculate the number of moles of hydrogen in 3 moles of the compound ammonium phosphate ((NH₄)₃PO₄). To find the number of moles of hydrogen, we first need to understand the composition of a single mole of the compound. One molecule of ammonium phosphate contains three ammonium ions (NH₄⁺).
Each ammonium ion has four hydrogen atoms; therefore, one mole of ammonium ions contains 4 moles of hydrogen atoms. Since there are three ammonium ions in each molecule of ammonium phosphate, we multiply the number of moles of hydrogen atoms in one ammonium ion by three to get the number of moles of hydrogen atoms in one mole of ammonium phosphate:
4 moles H (per NH₄⁺) × 3 (NH₄⁺ ions) = 12 moles H
So, 3 moles of ammonium phosphate would contain:
12 moles H (per mole of(NH₄)₃PO₄ × 3 (moles of (NH₄)₃PO₄) = 36 moles H