객관식
How many moles of silver atoms are present in 1.8 × 10^{20} atoms of silver?
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Mole Concept
객관식
A gold ring contains 1.806 × 10^{24} atoms of gold (Au). How many moles of gold are in the ring?
A
1.50 moles
B
6.02 moles
C
3.00 moles
D
0.30 moles
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검증된 단계별 안내1
Identify the given information: the number of gold atoms in the ring is \(1.806 \times 10^{24}\) atoms.
Recall the relationship between moles and number of atoms, which is given by Avogadro's number: \(6.022 \times 10^{23}\) atoms per mole.
Set up the conversion to find moles from atoms using the formula: \(\text{moles} = \frac{\text{number of atoms}}{\text{Avogadro's number}}\).
Substitute the given values into the formula: \(\text{moles} = \frac{1.806 \times 10^{24}}{6.022 \times 10^{23}}\).
Perform the division to find the number of moles of gold in the ring.
