Which of the following is the correct volume in mL for a mass of 500 mg of water? (Assume the density of water is 1.00 g/mL.)

• A. 50 mL
• B. 0.05 mL
• C. 0.5 mL
• D. 5 mL

Answer: (C)

Verified step by step guidance

1. Identify the given information: mass of water = 500 mg, density of water = 1.00 g/mL.
2. Convert the mass from milligrams (mg) to grams (g) because the density is given in g/mL. Use the conversion factor: 1000 mg = 1 g, so calculate mass in grams as \(\text{mass (g)} = \frac{500}{1000}\).
3. Recall the formula relating mass, volume, and density: \(\text{density} = \frac{\text{mass}}{\text{volume}}\).
4. Rearrange the formula to solve for volume: \(\text{volume} = \frac{\text{mass}}{\text{density}}\).
5. Substitute the mass in grams and the density into the volume formula to find the volume in milliliters.