How to calculate molarity?

can i have an easy formula please for calculating how much solvent i need if i have a known weight of solid for 10mM

Answers:
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
Everyone has four molars. Easy.
molarity = number of moles / number of liters

Th
Actually they have 8 molars.

Try some chemistry web site.
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.
http://dl.clackamas.edu/ch105-04/calcula.

molarity=moles of solute/liter of solution
molarity (C) = moles (n)/volume

volume should be converted to litres...

readjust the eqaution to find the volume.
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.
molarity=weight of solute/volume of solvent in litres
try www.chemguide.co.uk
M= mol/L

The answers post by the user, for information only, UKQnA.com does not guarantee the right.

  • if dwarf planets were still counted as planets. How many planets would be in the Solar System?
  • what is the advantages of an analogue signal?
  • What is the name of this animal that lives in trees, eats 1 leaf/day and only goes down to defecate?
  • The main problem with space travel seems to be with the heat of re-entry. Why not use a parachute in thin air
  • what is the minimum number of moves to complete spider solitaire (one suit)?
  • Does hot air rise or cold air sink?
  • what would happen if a ufo hooked upto the moon and dragged it off into deep outer space?
  • A piece of paper falls gently to the ground, screw it up into a ball and it falls , the mass has not changed?