number of moles is mass divided by molecular mass. the molecular mass of NaCl is 58.44g/mol. therefore you need 58.44g to make one mole
Remember that 1 mole NaCl is 58,44 g.
1 mole------------------58,44 g
x mole------------------y g (a known value)
x (mole)=y (grams)/58,44
moles of a solute in a solution = mass of the dissolved solute/molar mass of the solute
moles of NaCl in the solution = mass of dissolved NaCl/58,44
The mole fraction of HCl in 20 percent aqueous solution is 0.21.
calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetra chlorid
No. The mole of solution is equal to mole of solute plus mole of solvent (solVENT !, not solution)
18%
One mole solution of sodium chloride makes 1000 millimole. So 0.1 mole solution of sodium chloride will have 100 millimole in the solution.
Specific amount of such solution is allow to react with another standard solution as in case of titration process then with the help of formulae normality may be calculated.
The term molar it refers a form to know the concentration of a solution, and it is equivalent to a molar unit in a litre of solvent 1 Molar (1M) = 1 mole (molecular weight from the structure you are interested in) / 1000 mL or 1 L. Milimolar is the thousandth part from a solution 1M
Need moles NaCl first. 17.52 grams NaCl (1 mole NaCl/58.44 grams) = 0.29979 moles NaCl =====================Now. Molarity = moles of solute/Liters of solution ( 2000 ml = 2 Liters ) Molarity = 0.29979 mole NaCl/2 Liters = 0.1499 M NaCl ----------------------
- calculate the molar mass of the compound from the atomic weights of the elements - exactly weight this mass on a laboratory balance - put the compound in an 1 L volumetric flask - dissolve the compound in distilled (deionized) water at 20 0C; solution up to the mark - stir vigorously the solution
The mole fraction of HCl is 0.34.
Molarity is one mole of solute per 1000 ml of solution
Trick question. They are all the same. One mole is a unit of measurement. A mole of feathers and a mole of bowling balls will be the same amount: one mole.