Depends. It sounds like a vague question.
Say you wanted to know how mLs are in 1mol of pure water @ 25c.
1mol of water is 18g.
The density of water is 1g/1ml. So 1mol of water is 18mL.
So convert the amount of moles into grams. And times the amount of grams by the density.
M x D = mL
Or if you want to know how many mLs are in 2mols of 0.5mol/L solution.
Which is is 4000mL btw. You would divide the amount in moles by the molarity of the solution.
N / C = mL
Hope I have been somewhat helpful :)
You simply multiply by 1000. This is because milli means 1/1000, so there are 1000 millimoles in a mole. More to the point, there are 1000 millimolar in 1 molar.
convert to liters, then multiply by density of substance. with the grams, use the
moles=mass/molar mass to find moles
You need to know the molar mass of the compound.
divide by the molecular mass, (units of gram per mol)
2.5g/100ml = moles/1L First convert the ml into L. 2.5g/.100L = moles/1L Cross multiply. 25 moles/ 1L
Values can be expressed in terms of weight per unit volume (mg/ deciliter; mg/dL) or in the number of molecules in a volume, or molarity (moles or millimoles/liter; M or mM)
Since both of them are per liter....then all you need to do is a one step conversion of moles into grams using the molar mass...essentially you are going to multiply the mol/L by the molar mass in grams of the given substance...
moles per liter.
First you divide by 1000 to convert to moles/litre. Then you find the molecular mass (add up atomic masses from the periodic table). Multiply moles per litre by the molecular mass and it is in grams per litre.
1 mole = 106 micromoles
milligram divided by 1000 will give you grams, now use the molecular weight to get the number of moles. next divide dl by 10 to get liters. now you got moles per liter :) There is another simple way to convert miligram per dl into milimoles: 1gm/dl-multiply by 0.055= mm/litre and reverse mm/L divided by 0.055=mg/dl
divide by the molecular mass, (units of gram per mol)
So molar means moles per litre. So you have to divide by 1000 and multiply by 0.2. 0.5/1000*0.2 is 0.001 millimoles of glycine in your 0.2 millilitres.
In order to convert between milligrams and micromoles, one has to know the molar mass of the substance in question, then simply convert from grams to moles. As an example, let's assume that the measurement is that of oxygen, or O2, and that there's 10 milligrams per liter. First, divide by 1,000, to convert to grams, in this case, .01 grams. Then, divide this amount by the molar mass, which represents the number of grams in a mole. For O2, this is approximately 31.9988. This gives us a result of around .0003125 moles, or 3.125 x 10^-4. Then, we multiply by 1,000,000 to convert from moles to micromoles. The end result is approximately 312.5 micromoles in the liter.
(Micrograms per litre)/(gram molecular weight of solute) = (micromoles per litre).
So M is moles per litre. Therefore microM is micromoles per litre. There are 1000 litres in a metre cubed. There are also 1000 micromoles in a millimole. Though these cancel each other out, so micromolar is actually the same as millimoles per metre cubed.
You look up the atomic weight for calcium, which is equivalent to the number of grams per mole. Then you divide the 0.85 g by this number, to get the number of moles. From there, it should be easy to convert to millimoles.
Ppm means milligrams per litre. You do not need to adjust the volume and the milli does not need to be adjusted. All you need to do is divide by the molecular weight of the solute.
2.5g/100ml = moles/1L First convert the ml into L. 2.5g/.100L = moles/1L Cross multiply. 25 moles/ 1L
Values can be expressed in terms of weight per unit volume (mg/ deciliter; mg/dL) or in the number of molecules in a volume, or molarity (moles or millimoles/liter; M or mM)