Well it depends on the type of concentration you're looking for, molar or mass. In the first case you need to calculate how many moles of matter you have using it's molar mass which you can find in the Periodic Table the formula is number of moles= mass/molar mass, then you convert 200 ml in liters ie 0.2 and divide that by the number of moles you found previously.
If you are just searching for the mass concentration, simply divide 200 by 30, be careful though since you will have grams per milliliters in the end, you can convert 200ml to 0.2L and then divide if you want grams per liters.
Hoped this helped!
This is not a valid conversion; milligrams (mg) and grams (g) are measures of weight or mass while milliliters (mL or ml) measure volume.
This is not a valid conversion; milligrams (mg) and grams (g) are measures of weight or mass and mL (milliliters) is a measure of volume.
This is not a valid conversion; milligrams (mg) and grams (g) are measures of weight or mass while milliliters (mL or ml) measure volume.
Does not convert; milligrams (mg) and grams (g) are measures of weight or mass and mL (milliliters) is a measure of volume.
If the substance in question has a density of d grams per litre (or equivalently, d mg per ml), then the conversion is mass = volume*density so mg = ml*d It should be obvious from this that there can be no universal conversion formula - it would be different for each substance.
Does not convert; milligrams (mg) and grams (g) are measures of weight or mass and mL (milliliters) is a measure of volume.
There is no sensible answer. Millilitres are a measure of volume while grams are a measure of mass. There cannot be a simple conversion factor. 1 ml of air will have a much smaller mass that 1 ml of lead.
Does not convert; milligrams and grams are measures of weight and mL (milliliters) is a measure of volume.
Does not convert; milligrams (mg) and grams (g) are measures of weight or mass and mL (milliliters) is a measure of volume.
This is not possible to answer without knowing the substance that constitutes the 30 ml. Substances vary in their weight/volume ratio.
Does not convert; milligrams and grams are measures of weight and mL (milliliters) is a measure of volume.
Does not convert; milligrams and grams are measures of weight and mL (milliliters) is a measure of volume.
Ml of what? If water then 25ml = 25grams, since the density is 1g/ml
Does not convert; milligrams (mg) and grams are measures of weight or mass and mL (milliliters) is a measure of volume.
Does not convert; milligrams (mg) and grams are measures of weight or mass and mL (milliliters) is a measure of volume.
Does not convert; milligrams (mg) and grams are measures of weight or mass and mL (milliliters) is a measure of volume.
For all pracitical purposes 60 ml of soy sauce is 60 grams.
Does not convert; milligrams (mg) and grams (g) are measures of weight or mass and mL (milliliters) is a measure of volume.