How many moles of chlorine gas (Cl_2) are contained in 9.02 × 10^{23} molecules?

• A. 0.75 moles
• B. 0.15 moles
• C. 1.50 moles
• D. 6.02 moles

Answer: (C)

Verified step by step guidance

1. Identify the given quantity: 9.02 \times 10^{23} molecules of Cl_2.
2. Recall Avogadro's number, which is the number of molecules in one mole: 6.02 \times 10^{23} molecules/mole.
3. Set up the conversion to find moles from molecules using the formula: \(\text{moles} = \frac{\text{number of molecules}}{\text{Avogadro's number}}\).
4. Substitute the values into the formula: \(\text{moles} = \frac{9.02 \times 10^{23}}{6.02 \times 10^{23}}\).
5. Simplify the expression to find the number of moles of Cl_2.