Multiple Choice
How many iron atoms are contained in 354 g of iron, given that the molar mass of iron is 55.85 g/mol?
2. Atoms & Elements
Mole Concept
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How many moles of carbon dioxide are contained in 4.66 x 10^26 molecules?
A
0.774 moles
B
77.4 moles
C
774 moles
D
7.74 moles
Verified step by step guidance1
Understand the relationship between molecules and moles. The key concept here is Avogadro's number, which is approximately \(6.022 \times 10^{23}\) molecules per mole.
Set up the conversion from molecules to moles using Avogadro's number. You will use the formula: \( \text{moles} = \frac{\text{number of molecules}}{\text{Avogadro's number}} \).
Substitute the given number of molecules, \(4.66 \times 10^{26}\), into the formula: \( \text{moles} = \frac{4.66 \times 10^{26}}{6.022 \times 10^{23}} \).
Perform the division to find the number of moles. This involves dividing \(4.66 \times 10^{26}\) by \(6.022 \times 10^{23}\).
Interpret the result to determine which of the provided options matches the calculated number of moles.
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