객관식
Which of the following numerical expressions gives the number of atoms in 2.0 g of Ne (neon)?
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2. Atoms & Elements
Mole Concept
객관식
How many atoms are present in 14 moles of cadmium (Cd)?
A
1.96 × 10^{25} atoms
B
8.44 × 10^{24} atoms
C
6.02 × 10^{23} atoms
D
4.20 × 10^{24} atoms
검증된 단계별 안내1
Identify the quantity given: 14 moles of cadmium (Cd).
Recall that one mole of any substance contains Avogadro's number of particles (atoms, molecules, etc.), which is \(6.02 \times 10^{23}\) particles per mole.
Set up the calculation to find the total number of atoms by multiplying the number of moles by Avogadro's number: \(\text{Number of atoms} = 14 \text{ moles} \times 6.02 \times 10^{23} \text{ atoms/mole}\).
Perform the multiplication of the numerical values and add the exponents of 10 accordingly (do not calculate the final number here, just set up the expression).
Express the final answer in scientific notation to clearly represent the total number of atoms in 14 moles of cadmium.
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