Multiple Choice
How many carbon atoms are present in 5 moles of ethane (C_2H_6)?
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2. Atoms & Elements
Mole Concept
Multiple Choice
What is the total number of atoms present in 1.0 mole of CO_2?
A
6.022 × 10^{23} atoms
B
2.0 × 6.022 × 10^{23} atoms
C
3.0 × 6.022 × 10^{23} atoms
D
1.0 × 6.022 × 10^{23} atoms
Verified step by step guidance1
Identify the molecular formula of carbon dioxide, which is \(\mathrm{CO_2}\). This means each molecule contains 1 carbon atom and 2 oxygen atoms.
Calculate the total number of atoms in one molecule of \(\mathrm{CO_2}\) by adding the atoms: \$1 + 2 = 3$ atoms per molecule.
Recall that 1 mole of any substance contains Avogadro's number of molecules, which is \(6.022 \times 10^{23}\) molecules.
To find the total number of atoms in 1 mole of \(\mathrm{CO_2}\), multiply the number of atoms per molecule by Avogadro's number: \(3 \times 6.022 \times 10^{23}\) atoms.
Express the final answer as the total number of atoms in 1 mole of \(\mathrm{CO_2}\), which is \(3.0 \times 6.022 \times 10^{23}\) atoms.
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