Approx. 6 mol/L at r.t.
Solubility is determined experimentally.
divide by the molecular mass, (units of gram per mol)
moles per liter.
The molarity of a solution is the number of moles of a solute per liter of its solution. The normality of a solution is the number of gram equivalent weight of a solute per liter of its solution. As I said before, and precisely, Molarity is moles of solute per VOLUME of solution!
By amount I assume you mean moles. The amount of moles per liter and the amount of moles are the same if you calculate from 1 L (which is what you do when you have, for example, 0,30 M) 0,30 M = 0,30 mol/liter, if you have 1 liter that means you have 0,30 moles. So you can use either moles or mol/liter.
If it is 5 molar: 5 moles per liter, then you start with 5 moles of salt. You will always have 5 moles of salt, but it is spread among a bigger volume. So you want it to be 2 moles per liter, so the amount of salt is 2*V, but we know that there are 5 moles, so we have 2*V = 5, and V = 5/2 = 2.5 Liters. Since we started with 1 liter, we must add 1.5 liters.
1 mole = 106 micromoles
Solubility is determined experimentally.
solubility
divide by the molecular mass, (units of gram per mol)
salinity
100mg of salt per ml is 100,000mg salt/L, i.e. 100g per litre. The molecular mass of copper II nitrate is 187.556g/mol. Divide weight by molecular mass to give you moles of 0.5332. This is already in litres, so it is 0.5332 molar (M)
Sugar
moles per liter.
Moles of solute per liter of solution.
(Micrograms per litre)/(gram molecular weight of solute) = (micromoles per litre).
The molarity of a solution is the number of moles of a solute per liter of its solution. The normality of a solution is the number of gram equivalent weight of a solute per liter of its solution. As I said before, and precisely, Molarity is moles of solute per VOLUME of solution!