How many micrograms in a millilitre?

Answer 1

The only way that you can relate micrograms [mass unit] to millilitres[volume unit] is if you have a substance of known density.

Density = mass / volume. For example, pure water has a density of 1 gram per millilitre, or 1000000 migrograms / millilitre.

Answer 2

The number of micrograms in a milliliter depends on the density or concentration of the substance. To convert from milliliters to micrograms, you would need to know the density of the substance in question.

Answer 3

This question cannot be answered sensibly. A millilitre is a measure of volume, with dimensions [L3]. A microgram is a measure of mass, with dimensions [M]. The two measure different things and basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.

As a simple mental exercise consider a microgram of air and a microgram of lead. They will have very different volumes.

Answer 4

One is a measure of mass, the other is a unit of volume, so you can't have a standard conversion. For a specific substance, you would need to know the density of the substance, and then use the relationship:mass = volume x density

Answer 5

None, since there can be no conversion.

A microgram is a measure of mass. A millilitre is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.

Consider a millilitre of air. How many micrograms? Next consider the same volume of water. How many micrograms?

The masses of equal volumes of the two substances will clearly be very different. So there is no direct conversion between mass and volume: you need to know the density of the substance to enable you to carry out the conversion.

Answer 6

Micrograms are a measure of mass, millilitres are a measure of volume. You would need to know the density of the substance