What is the total mL of the lake?
215 ng/mL x ?mL = ? ng Hg which is ? x 10^-12 kg
215 ng/mL x ?mL = ? ng Hg which is ? x 10^-12 kg
1. Start with the given value of mercury concentration in the lake: 215 ng/mL.
2. Since 1 kg is equal to 1,000,000 ng, we'll convert the ng to kg. Divide the value by 1,000,000 to convert it to kilograms:
215 ng/mL รท 1,000,000 = 0.000215 kg/mL.
3. Now, to find the mass of mercury in the lake, we need to know the volume of the lake in milliliters (mL). Once we have that, we can multiply the volume by the concentration to get the mass.
Let's assume the volume of the lake is V mL (you'll need to provide this value).
4. Multiply the concentration (0.000215 kg/mL) by the volume (V mL) to find the total mass of mercury in the lake:
Total mass of mercury = Concentration ร Volume
Total mass of mercury = 0.000215 kg/mL ร V mL
The resulting value will be the total mass of mercury in kilograms in the lake.
Remember to provide the volume of the lake (in mL) in order to get the specific answer.