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Which of the following compounds contains the largest number of atoms?rn1.00 mole of H2SO4rn2.00 moles of KCIrn1.00 mole of NH3rn1.00 mole of HBr
Accepted Answer
1.00 mole of H2SO4 contains the largest number of atoms. Here's why:
Avogadro's Number: One mole of any substance contains 6.022 x 10^23 particles (atoms, molecules, etc.).
Atoms per Molecule:
H2SO4 (sulfuric acid): 2 hydrogen + 1 sulfur + 4 oxygen = 7 atoms per molecule
KCl (potassium chloride): 1 potassium + 1 chlorine = 2 atoms per molecule
NH3 (ammonia): 1 nitrogen + 3 hydrogen = 4 atoms per molecule
HBr (hydrogen bromide): 1 hydrogen + 1 bromine = 2 atoms per molecule
Since 1 mole of H2SO4 has the most atoms per molecule (7), and all the moles are equal, it will have the largest total number of atoms.
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