This is not a valid conversion. Milliliters (mL or ml) and liters (L) are measures of volume. Grams (g), kilograms (kg) and milligrams (mg) are measures of weight or mass.
50 Kg of course !
The density is 10 kg/mL
To convert milliliters (mL) to kilograms (kg), you need to know the density of the substance in question. The density of a substance is its mass per unit volume. For water, which has a density of 1 g/mL, 7500 mL would be equal to 7500 grams. To convert grams to kilograms, you divide by 1000, so 7500 grams is equal to 7.5 kg.
2.5 ml
This cannot be sensibly answered. A milliliter (mL or ml) is a measure of volume, grams (g), kilograms (kg) and milligrams (mg) are measures of weight or mass.
50 ml = 1.69070114 US fluid ounces
kg is a mass, ml is a volume. However with water, 1 kg = 1 liter = 1000ml
Salt's density is 2.16 g/mL. To convert 50 mg to grams, divide by 1000: 50 mg = 0.05 g. Divide this by the density to obtain the volume in mL: 0.05 g / 2.16 g/mL ≈ 0.0231 mL.
The density of the mass is calculated by dividing the mass by the volume. In this case, the density would be 810 kg / 9 ml = 90 kg/ml.
This is not a valid conversion. Milliliters (mL or ml) and liters (L) are measures of volume. Grams (g), kilograms (kg) and milligrams (mg) are measures of weight or mass.
By dividing mass by volume, the density is: 4.571 kg/mL or 4,571.43 g/mL.
To calculate density, divide the mass of the object by its volume. In this case, the density would be 20 kg / 10 ml = 2 kg/ml.
This is not a valid conversion; kilograms (kg) and grams (g) are measures of weight or mass while milliliters (mL or ml) measure volume.
To convert densities given in g/mL to kg/L, you need to divide by 1000. For example, 1 g/mL is equal to 0.001 kg/L. When comparing densities, the numerics will remain the same between g/mL and kg/L, but the units will be different - g/mL versus kg/L.
50 cc = 50 ml
This is not a valid conversion; kilograms (kg) and grams (g) are measures of weight or mass while milliliters (mL or ml) measure volume.