Water has a density of 0.997 g/mL at room temperature (25 C). If you have exactly 500 mL of water, what is its mass in kg?
0.997 g/mL x 500 mL x (1 kg/1000 g) = ?
To find the mass of water in kilograms, we need to convert the given density from grams per milliliter to kilograms per milliliter.
1 gram (g) is equal to 0.001 kilograms (kg). Therefore, the density of water in kilograms per milliliter (kg/mL) can be calculated as:
Density (kg/mL) = Density (g/mL) × Conversion Factor
Density (kg/mL) = 0.997 g/mL × 0.001 kg/g
Density (kg/mL) = 0.000997 kg/mL
Now that we have the density in kilograms per milliliter, we can use it to find the mass of 500 mL of water.
Mass (kg) = Volume (mL) × Density (kg/mL)
Mass (kg) = 500 mL × 0.000997 kg/mL
Mass (kg) = 0.4985 kg
Therefore, 500 mL of water has a mass of 0.4985 kg.