The number of atoms in one mole of a substance depends on how many atoms are present in a single molecule of that substance. Since 1 mole = 6.022 × 10²³ molecules (Avogadro’s number), the molecule that has more atoms... Read More
The number of atoms in one mole of a substance depends on how many atoms are present in a single molecule of that substance. Since 1 mole = 6.022 × 10²³ molecules (Avogadro’s number), the molecule that has more atoms per molecule will have the highest total number of atoms per mole.
Let’s calculate the total atoms for each option:
1️⃣ H₂SO₄ (Sulfuric acid)
Composition: 2 Hydrogen (H) + 1 Sulfur (S) + 4 Oxygen (O)
Total atoms per molecule = 2 + 1 + 4 = 7 atoms
2️⃣ HClO₄ (Perchloric acid)
Composition: 1 Hydrogen (H) + 1 Chlorine (Cl) + 4 Oxygen (O)
Total atoms = 1 + 1 + 4 = 6 atoms
3️⃣ O₃ (Ozone)
Composition: 3 Oxygen atoms
Total atoms = 3 atoms
4️⃣ H₂C₂O₄ (Oxalic acid)
Composition: 2 Hydrogen (H) + 2 Carbon (C) + 4 Oxygen (O)
Total atoms = 2 + 2 + 4 = 8 atoms
H₂C₂O₄ has the highest number of atoms per molecule (8 atoms).
Therefore, 1 mole of H₂C₂O₄ contains:
8 atoms×6.022×1023=4.8176×10248 \text{ atoms} \times 6.022 × 10^{23} = 4.8176 × 10^{24}8 atoms×6.022×1023=4.8176×1024 atoms
This is higher than all other molecules given in the options.
1 mole = 6.022 × 10²³ molecules of any substance.
The total number of atoms in 1 mole = (Atoms per molecule) × (Avogadro’s number).
More atoms per molecule = More total atoms per mole.
Thus, H₂C₂O₄ (Oxalic acid) contains the maximum number of atoms per mole among the given choices.
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