Multiple Choice
How many atoms are present in 2.0 moles of carbon?
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2. Atoms & Elements
Mole Concept
Multiple Choice
How many moles of oxygen atoms are present in one mole of CO_2?
A
1 mole
B
3 moles
C
2 moles
D
0.5 mole
Verified step by step guidance1
Identify the chemical formula of carbon dioxide, which is \(\mathrm{CO_2}\), indicating one carbon atom and two oxygen atoms per molecule.
Understand that one mole of \(\mathrm{CO_2}\) contains Avogadro's number of molecules, and each molecule has 2 oxygen atoms.
Calculate the total moles of oxygen atoms by multiplying the number of moles of \(\mathrm{CO_2}\) by the number of oxygen atoms per molecule: \(1 \text{ mole } \times 2 = 2 \text{ moles of oxygen atoms}\).
Recognize that the question asks for moles of oxygen atoms, not molecules, so the answer corresponds to the total oxygen atoms present.
Conclude that one mole of \(\mathrm{CO_2}\) contains 2 moles of oxygen atoms.
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