can i have an easy formula please for calculating how much solvent i need if i have a known weight of solid for 10mM
2006-11-06 00:27:34 · 12 answers · asked by jo 3 in Science & Mathematics ➔ Chemistry
To work out the volume of solvent needed to make a 10mM (0,01M) solution use the formula:
Known mass of solid
--------------------------------- = volume of solvent needed (in litres)
0.01 x Relative Mass of solid
2006-11-07 13:26:55 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Molarity is concentration (n/v=C) first find the moles (n) by taking your mass divided over your molar mass (you will find the molar masses of Ag etc. on the periodic table of course) then you take that number and put it divided over your 0.335L of solution (because it has to be in Liters, so the final units are mol/L) Happy Chemistry-ing!
2016-05-22 03:31:03 · answer #2 · answered by Anonymous · 0⤊ 0⤋
If you're looking for the mass of a solute in a particular molarity of solution, take the molarity (10 mM = 0.01 M). Multiply the molarity by the volume of the solution (in Liters). That gives you the number of moles of the solute. Multiply the number of moles by the molar mass of the solute, and you have the mass of the solute in grams.
OK, I read the question backwards. Take the mass of the solid, and divide it by the molar mass to give you the number of moles. Divide the number of moles by the molarity (0.01 M) and that will give you the volume of the solution.
2006-11-06 00:31:43 · answer #3 · answered by hcbiochem 7 · 0⤊ 0⤋
molarity(mol/L) =
weight of substance(g) Xvolume(L)X molecular weight(g/mol)
for you case, 0.01L solution,
molarity(mol/L) =
weight of substance(g) X0.01(L)X molecular weight(g/mol),
Dissolve the weight you have in the least amount of solvent and complete to 10 mL.
You cannot predict the exact volume of solvent needed, it depends on the nature of solute.
2006-11-06 01:08:27 · answer #4 · answered by Hamid 1 · 0⤊ 0⤋
molarity=weight of solute/volume of solvent in litres
2006-11-06 01:56:21 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Actually they have 8 molars.
Try some chemistry web site.
2006-11-06 00:30:08 · answer #6 · answered by Anonymous · 1⤊ 1⤋
Everyone has four molars. Easy.
2006-11-06 00:28:46 · answer #7 · answered by Anonymous · 1⤊ 2⤋
molarity (C) = moles (n)/volume
volume should be converted to litres.....
readjust the eqaution to find the volume...
2006-11-06 00:43:38 · answer #8 · answered by zuli 4 · 0⤊ 0⤋
http://dl.clackamas.edu/ch105-04/calculat.htm
molarity=moles of solute/liter of solution
2006-11-06 00:36:58 · answer #9 · answered by charmaine_gem 2 · 0⤊ 0⤋
molarity = number of moles / number of liters
Th
2006-11-06 00:30:04 · answer #10 · answered by Thermo 6 · 0⤊ 0⤋