what is difference between molerity and molality any 5
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molarity is the number of moles per unit volume in litres .
molality is the number of moles per unit weight in kg
molality is the number of moles per unit weight in kg
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Both molarity and molality can both be used to measure concentration.Molarity is defined as the number of moles of a solute that are dissolved in 1 liter of a solution. Molality is defined as the number of moles of a solute that are dissolved in 1 kg of a solvent.= mole solute / L solution
Molarity is also commonly referred to as molar concentration. Therefore a measure of molar concentration based on the volume of liquid that a substance is dissolved in. It is important to realize that the volume is in liters so you may have to convert first if you have volume in ml for example.
To prepare a molar concentration one adds a known quantity of solute to a volumetric flask then fills up the flask with liquid until the 1 liter mark is achieved.

For example: one can make up a certain molar concentration of sugar. The weight of the sugar first has to be converted to moles and then the water is added until 1 liter is reached.
To calculate molarity you need the solute in moles, but usually you will have a certain weight of solute which means you first need to convert the grams into moles. This can be done by finding the molar mass of the solute from the periodic table.
Molarity is also commonly referred to as molar concentration. Therefore a measure of molar concentration based on the volume of liquid that a substance is dissolved in. It is important to realize that the volume is in liters so you may have to convert first if you have volume in ml for example.
To prepare a molar concentration one adds a known quantity of solute to a volumetric flask then fills up the flask with liquid until the 1 liter mark is achieved.

For example: one can make up a certain molar concentration of sugar. The weight of the sugar first has to be converted to moles and then the water is added until 1 liter is reached.
To calculate molarity you need the solute in moles, but usually you will have a certain weight of solute which means you first need to convert the grams into moles. This can be done by finding the molar mass of the solute from the periodic table.
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