What is the mass of 0.560 moles of chlorine gas (Cl_2)?

• A. 39.7 g
• B. 19.8 g
• C. 70.9 g
• D. 15.8 g

Answer: (A)

Verified step by step guidance

1. Identify the given quantity: 0.560 moles of chlorine gas (Cl_2).
2. Determine the molar mass of chlorine gas (Cl_2). Since chlorine has an atomic mass of approximately 35.45 g/mol, calculate the molar mass of Cl_2 by multiplying by 2: \(\text{Molar mass of Cl}_2 = 2 \times 35.45 \text{ g/mol}\).
3. Use the formula relating mass, moles, and molar mass: \(\text{Mass} = \text{Moles} \times \text{Molar mass}\).
4. Substitute the known values into the formula: \(\text{Mass} = 0.560 \text{ moles} \times \text{Molar mass of Cl}_2\).
5. Calculate the product to find the mass of 0.560 moles of chlorine gas.