How many moles of solute are present in 2000 mL of a 1 M solution?

• A. 2 moles
• B. 1 mole
• C. 0.2 moles
• D. 0.5 moles

Answer: (A)

Verified step by step guidance

1. Recall the definition of molarity (M), which is the number of moles of solute per liter of solution. It is given by the formula: \(M = \frac{\text{moles of solute}}{\text{liters of solution}}\).
2. Identify the given values: the molarity \(M\) is 1 M, and the volume of the solution is 2000 mL.
3. Convert the volume from milliliters to liters because molarity uses liters: \$2000 \text{ mL} = \frac{2000}{1000} = 2 \text{ L}$.
4. Rearrange the molarity formula to solve for moles of solute: \(\text{moles of solute} = M \times \text{liters of solution}\).
5. Substitute the known values into the equation: \(\text{moles of solute} = 1 \text{ M} \times 2 \text{ L}\), which will give the number of moles of solute.