객관식
How many moles of iron (Fe) are present in 279 g of iron? (Molar mass of Fe = 55.85 g/mol)
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2. Atoms & Elements
Mole Concept
Multiple Choice
Which value approximately represents the number of atoms in one mole of gold?
A
1.00 × 10^{22}
B
3.01 × 10^{23}
C
9.11 × 10^{28}
D
6.02 × 10^{23}
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검증된 단계별 안내1
Recall that one mole of any substance contains Avogadro's number of particles (atoms, molecules, etc.).
Avogadro's number is approximately \(6.02 \times 10^{23}\) particles per mole.
Since the problem asks for the number of atoms in one mole of gold, we use Avogadro's number directly.
Compare the given options to Avogadro's number to identify the closest value.
Select the value that matches \(6.02 \times 10^{23}\) as the approximate number of atoms in one mole of gold.
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