I need help finding the volume?

Question

I know the mmols, density, and molecular weight of the compound.

I know the mmols which is 640, the molecular weight is 137.03, and the density is 1.273.

Answer 1

This is how it is done: First I will define each parameter in terms of its units.
Molecular weight = g/mol
density = g/mL
mmols = 1000 mmols equals 1 mol

Here are the calculation you need to do (Y will equal the your number of mmols )

First convert the number of mmols to mols so:
Y mmol x 1 mol/mmol = Y mol
Now to gind the number of grams do this:
Y mol x g/mol = Y g
Now you have converted the Y from mmols to grams. Now all you need to do to get the volume in milliters is divide Y grams by the density:
Y g / (g/mL) = mL
I hopr this was not too confusing and that it helps.
Now you

Answer 2

If you know the moles and molecular weight, then multiply and you have the mass in grams.

D = M / V. Since you also have the density, then solve for the volume

Answer 3

D=m/v, So, V=m/D. You can use the Ideal Gas Law PV = nRT or PV = (m/fw)RT if the problem is asking for the answer not at STP. m=mass,fw=formula weight,R=0.0821 liter atmosphere-mol degree, T= Temeperature,P=Pressure and V=Volume. V= (m/fw)RT/P.

Answer 4

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