Answer:
[tex]\large { \boxed{ 1.62 \times 10^{-24} \text{ H atoms}}}[/tex]
Explanation:
1. Calculate the moles of C₃H₂O
Moles of C₃H₂O = 72.5 g C₃H₂O × (1 mol C₃H₂O /54.05 g C₃H₂O)
= 1.341 mol C₃H₂O
2. Calculate the molecules of C₃H₂O
6.022 × 10²³ molecules C₃H₂O = 1 mol C₃H₂O
Molecules of C₃H₂O
= 1.341 mol C₃H₂O × (6.022 × 10²³ molecules C₃H₂O /1 mol C₃H₂O)
= 8.08 × 10²³ molecules C₃H₂O
3. Calculate the number of H atoms.
There are two H atoms in one molecule of C₃H₂O
[tex]\rm\text{No. of H atoms} = 8.08 \times 10^{23}\, molecules\, C_{3}H_{2}O \times \dfrac{\text{2 atoms H}}{\rm 1\, molecule \, C_{3}H_{2}O} = \text{1.62$\times 10^{-24}$ H atoms}\\\\\text{There are $\large { \boxed{\mathbf{1.62\times10^{-24}}\textbf{ H atoms}}}$} \text{ in the sample}[/tex]
